Coding and Decoding

Reasoning and Quantitative Aptitude Coding-Decoding

SITAMS

Module Name: Coding and Decoding


SITAMS

MOUDULE OBJECTIVE:

This module is used to improve mental ability of a person. A CODE is a‘system of signals’. Therefore, Coding is a method of transmitting a message between thesender and the receiver without a third person knowing it.

Before transmitting, the data is encoded and at receiver side encode data is decodedin order to obtain original data by determining common key in encoded data.

The Coding and Decoding Test is set up to judge the candidate’s ability.

The Coding and Decoding is classified into seven types according to the on what wayit is doing. They areype

Type1: Letter Coding.

Type2: Number Coding.

Type3: Matrix Coding.

Type4: Substitution.

Type5:Mixed Letter Coding.

Type6:Mixed Number Coding.

Type7:Deciphering Individual Letter Codes by Analysis.


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SOLVED EXAMPLES:

Type1:Letter Coding:

In this type the real alphabets in a word are replaced by certain other alphabetsaccording to a specific rule to form its code. the candidate is required to detect the commonrule and answer the questions accordingly.

Case1:To form the code for another word

1. if in a certain language MYSTIFY is coded as NZTUJGZ, how is NEMESIS coded inthat language? (B.S.R.B. 1997)

Sol. Clearly, each letter in the word MYSTIFY is moved one step forward to obtain the

corresponding letter of the code.

M Y S T I F Y

+1↓

N Z T U J G Z

So, in NEMESIS, N will be coded as O, E as F, M as N and so on. Thus, the codebecomes OFNFTJT.

2. If TAP is coded as SZO, then how is FREEZE coded? (M.B.A. 1997)

Sol. Clearly each letter in the word TAP is moved one step backward to obtain thecorresponding

letter of the code.

S Z O

-1↑

T A P

Thus, in FREEZE, F will be coded as E, R as Q,E as D and Z as Y.

So, the code becomes EQDDYD


SITAMS

3. In a certain code, MENTION is written as LNEITNO. How is PATTERN written inthat code? (B.S.R.B. 1998)

SOL: Clearly, to obtain the code, the first letter of the word MENTION is moved one step

backward and the remaining letters are.

Reversed in order, taking two at a time .So, in PATTERN, P will be coded as O, andthe sequence of the remaining letter in the cod would be TAETNR. Thus thecode becomes OTAETNR. Hence, The answer is OTAETNR.

Case 2: To find the word by analyzing the given code (DECODING)4. I f in a certain language CARROM is coded as BZQQNL, which word will be coded

as HOUSE?

SOL: each letter of the word is one step ahead of the corresponding letter of the code

B Z Q Q N L H O U S E| | | | | | | | | | |C A R R O M I P V T F

So, H is coded as I, O as P, U as V, S as T and E as F. HOUSE is coded asIPVTF.

TYPE 2: NUMBER CODING

In these questions, either numerical code values are assigned to a word oralphabetical code letters are assigned to the numbers. The candidate is required to analysethe code as per the directions.

Case 1: when a numerical code values are assigned to words

5. if in a certain language A is coded as 1,B is coded as 2,and so on , how is BIDDIC iscoded in that code? (Assistant Grade,1995)

SOL:As given the letters are coded as

A B C D E F G H I1 2 3 4 5 6 7 8 9

So in BIDDIC, B is coded as 2, I as 9,D as 4 and C as 3. Thus, BIDDIC is coded as2944936. If PAINT is coded as 74128 and EXCEL is coded as 93596, then how would you

encode ACCEPT? (I.Tax,1996)

SOL: Clearly, in the given code, the alphabets are coded as follows

P A I N T E X C L


SITAMS

7 4 1 2 8 9 3 5 6So, in ACCEPT, A is coded as 4, c as 5, E as 9, P as 7 and T as 8. Hence, the

correct code is 455978.

Case2: Number to letter coding.

7. In a certain code, 2 is coded as P, 3 as N, 9 as Q, 5 as R, 4 as A and 6 as B. How is599423 coded in that code?

SOL: Clearly as given 5 is coded as R, 9 as Q, 4 as A, 2 as P, 3 as N. So, 599423 is codedas RQQAPN.

TYPE 3: MATRIX CODING

In this type of questions, a word is represented by only one set of numbers as given inany one of the alternatives . the set of alternatives are represented by two classes of alphabetsas in the given matrices.

Examples:

MATRIX 1

0 1 2 3 40 D K A E C1 C D K A E2 K C E A D3 K C D E A4 E D A K C

MATRIX 2

5 6 7 8 95 P L O T N6 T P N L O7 P N T O L8 O N T P L9 L O P N T

8. find COLD? (I.Tax & Central Excise, 1996)

(a)44,96,95,22 (b)31,99,77,22 (c)30,66,86,43 (d)10,85,79,24

SOL: From matrix 1, C can be coded as 04,10,21,31 or 44.

From matrix 2,O can be coded as 57,69,78,85 or 96.


SITAMS

From matrix 2,L can be coded as 56,68,79,89 or 95.

From matrix 1, D can be coded as 00,11,24,32 or 41.

Clearly, only (d) contains all correct codes.

TYPE 4: SUBSTITUTION

In this type of questions, some particular objects are assigned code names. Then aquestion is asked that is to be answered in the code language.

9. If COOK is called BUTLER, BUTLER is called MANAGER, MANAGER is calledTEACHER, TEACHER is called CLERK, CLERK is called PRINCIPAL, who willteach in a class?

SOL : Clearly, a TEACHER teaches in a class and as given TEACHER is calledCLERK. So a CLERK

will teach in a class.

10. If DIAMOND is called GOLD , GOLD is called SILVER, SILVER is called RUBYand RUBY is called EMERALD, which is the cheapest jewel ?

SOL: We know that ‘SILVER’ is cheapest. But, as given, ‘SILVER’ is called ‘RUBY’.So, RUBY is the

cheapest.

TYPE 5: MIXED LETTER CODING

In this type of questions, three or four complete messages are given in the codedlanguage and the code for a particular word is asked. To analyses such codes, any twomessages bearing a common word are picked up. The common code word will mean thatword. Proceeding similarly by picking up all possible combinations of two, the entiremessage can be analyzed.

11. If ‘nso ptr kli chn’ stands for ‘sharma gets marriage gift’, ‘ptr lnm wop chn’ standsfor‘wife gives marriage gift’, ‘tti wop nhi’ stands for ‘he gives nothing’, what wouldmean ‘gives’? (Assistant Grade, 1995)(a)chn (b)nhi (c)ptr (d)wopSOL: (d). In the second and third statements the common word is ‘gives’ and thecommon code word is ‘wop’. So ‘wop’ means ‘gives’.

TYPE 6: MIXED NUMBER CODING

In this type of questions, a few groups of numbers each coding a certain shortmessage, are given. Through a comparison of the given coded messages, taking two at a time,


SITAMS

the candidate is required to find the number code for each word and then formulate the codefor the message given.

12. In a certain code, ‘786’ means ‘study very hard’, ‘958’ means ‘hard work pays’ and‘645’ means ‘study and work’. Which of the following is the code for ‘very’?

(S.B.I.P.O., 1994)

SOL: In the first and second statements, the common word is ‘hard’ and the commoncode digit

is ’8’. So, ‘8’ means ‘hard’.

In the first and third statements, the common word is ‘study’ and the common codedigit is

‘6’. So, ’6’ means ‘study’.

Thus, in the first statement ‘7’ means ‘very’.

TYPE 7: DECIPHERING INDIVIDUAL LETTER CODES BY ANALYSIS

In this type of questions, certain simple words are given along with their codes. Thecandidate is required to decipher individual codes for different letters by comparing, takingtwo words at a time, and then answer the given questions accordingly.

EX : COLUMN 1 COLUMN 2

DELIBERATION aemrqsCONSIDERATE ccehlmoGHOSTLIKE

cfhmoqqrxWORLDLY

cdgmqrsxzKNOWLEDGE

adefmopqqszROCKET

cefkmopqqszz

13. SOLACE (Hotel Management,1996)

(a)aedpqr (b)acemoq (c)acdmpq (d)demopq


SITAMS

SOL: we first find the exact codes for given word.

DELIBERATION is a 12 letter word. Hence its code is cefkmopqqszz.

CONSIDERATE is a 11 letter word.So its code is adefmopqqsz.

Similarly find for another words.

In all words the common letter is ‘O’ and common code letter is‘m’.Hence ‘O’

means ‘m’.

In WORLDLY and ROCKET, the common letters are O & R. code letter for O is‘m’, then other common code letter ‘e’ standsfor R.

Similarly find code letters for others. The information can be summarizedas bellow:

code m e c o h l Q r s a x f z d g p kletter O R L D W Y E K T C G N I S H A B

FOR SOLACE: The code for ‘S’ is ‘d’,for ‘O’ is ‘m’, for ‘L’ is ‘c’, for ‘A’ is ‘p’, for ‘C’ is‘a’ and for ‘E’ is ‘q’. So, the code for SOLACE is ‘dmcpaq’ or ‘acdmpq’.


SITAMS

EXERCISE PROBLEMS:

1. If in a certain language, MADRAS is coded as NBESBT, how is BOMBAY coded in thatcode?(S.S.C 1994) (S.S.C, 1994)a)CPNCBX b) CPNCBZ c) CPOCBZ d) CQOCBZ e) None of theabove.

Sol: (b). each letter in the word is moved one step forward to obtain the correspondingletter of the code.

2. In a certain code, TRIPPLE is written as SQHOOKD. How is DISPOSE written in thatcode? (Central Excise, 1995)a)CHRONRD b) DSOESPI c) ESJTPTF d) ESOPSID e) None ofthese

Sol: (a). Each letter in the word is moved one step backward to obtain the correspondingletter of the code.

3. In certain code, TOGETHER is written as RQEGRJCT. In the same code PAROLE willbe written as (Bank P.O. 1994)a)NCPQJG b) NCQPJG c)RCPQJK d)RCTQNG e)None ofthese.

Sol:(a). The letters at odd positions are each moved two steps backward and those at evenpositions are each moved two steps forward to obtain the corresponding letters of thecode.

4. In certain language, CHAMPION is coded as HCMAIPNO, how is NEGATIVE coded inthat code ? (B.S.R.B. 1995)a) ENAGITEV b)NEAGVEIT c) MGAETVIE d) EGAITEVN

e)NEGATIEVSol:(a). The letters of the word are reversed in order, taking two at a time, to obtain thecode.

5. If in a certain code ,TEACHER is written as VGCEJGT, how would DULLARD bewritten in the same code ? (M.B.A. 1998)a) FWMNCTF b)FWNNBTE c)FWNNCSF d)FWNNCTF e)Non of

these

Sol:(d).each letter of the word move two steps forward to obtain the code

6. In certain code, TOGETHER is written as RQEGRJCT .in the same code, PAROLE willbe written as (Bank P.O.1994)a) NCPQJG b) NCQPJG c)RCPQJK d)RCTQNG e)none of

these


SITAMS

Sol:(a).the letters at odd positions are moved two steps backward and those at evenpositions are each moved two steps forward to obtain the corresponding letters of thecode.

7. In a code ,CORNER is written as GSVRI .how can CENTRAL be written in that code?(C.B.I. 1994)

a) DFOUSBM b) GIRXVEP c) GJRYVEP d) GNFJKER e)none of these

Sol:(b).each letter of the word moved four steps forward to obtain the code.

8. If DELHI is coded as CCIDD ,how would you encode BOMBAY? (M.B.A.1997)a) AJMTVT b) AMJXVS c) MJXVSU d) WXYZAX e) none of

these

Sol: (b).the first, second, third,……. Letters of the word are respectively moved one, two,three,…………steps to backward to obtain the corresponding letters of the code.

9. If in a certain language, POPULAR is coded as QPQVMBS, which word would becoded as GBNPVT ?

a) FAMOSU b)FAMOUS c) FASOUM d) FOSAUM e) FAMSUO

Sol: (b). Each letter of the word is one step behind the corresponding letter of the code.

10. If ROBUST is coded as QNATRS in a certain language, which word would be coded asZXCMP ?

a) BKQEVE b) BKQDWE c) BKQDWF d)AYDNQ e) BZEOR

Sol: (d). Each letter of the word is one step ahead of the corresponding letter of the code.

11. If in a certain code, SWITCH is written as TVJSDG, which word would be written ascqfze?

a) BARED b) BRAED c) BREAD d)BRADE e) BRDAE

SOL: (C).each letter at odd place in the word is one step behind and each letter at even placein the word is one step ahead of the corresponding letter of the code.

12. If in acertain language, SHIFT is coded as RFFBO,which word would be coded asLKUMB?

a) MMXQG b) MLVNC c) KJVLA d) MJVLC e) KJTLA

SOL: (a).the firsr,second ,third fouth and fifth letter in the word are respectively one,two,three,four and five steps ahead of the corresponding letter of the code.

13. If in a certain language,DIUGNAL is the code for LANDUID,which word would becoded as ELKCAHS?

a) SHINGLE b) SHERBET c) SHACKLE d) SHOCKLE e) NONE

SOL: (c).in the code,the letters of the code are put in a reverse order.


SITAMS

14. If in a certain language,TRIANGLE is coded as SQHZMFKD,which word would becoded as DWZLOKD?

a) EXAMPLE b) FIGMENT c) DISMISS d) DISJOIN e)NONE

SOL:(a). each letter of the word is one step ahead of the corresponding letter of the code.

15. If DELHI is coded as 73541 and CALCUTTA as 82589662, how can CALICUT becoded? (Assistant Grade, 1995)

a) 5279431 b) 5978213 c) 8251896 d) 8543691

Sol: (c). The alphabets are coded as follows :

D E L H I C A U T7 3 5 4 1 8 2 9 6So, in CALICUT, C is coded as 8, A as 2, L as 5,I as 1, U as 9 and T as 6. Thus,the code for CALICUT is 8251896.

16. In a certain code, RIPPLE is written as 613382 and LIFE is written as 8192.How isPILLER written in that code? (Railways, 1998)

a) 318826 b) 318286 c) 618826 d) 338816

Sol: (a).The alphabets are coded as shown:

R I P L E F6 1 3 8 2 9So, in PILLER, P is coded as 3, I as 1, L as 8, E as 2 and R as 6. Thus, the codefor PILLER is 318826.

17. In a certain code language 24685 is written as 33776.how is 35791 written in that code?(P.O. EXAM,1989)

a)44826 b) 44880 c)46682 d)44682

SOL: (CLERLY ,in the code letters at odd places are one place ahead and those at evenpiaces are one place before the corresponding letter in the word.

18. In a certain code language 35796 is written as 44887.how is 46823 written in that code?(P.O.EXAM 1991)

a)57914 b)55914 c) 55934 d)55714

SOL: (b).the same pattern as in above question is followed i.e. 4 will be written as 5,6as5,8as 9,2 as 1 and 3 as 4.so,the code becomes 55914.

19. If PALAM could be given the code number 43, what code number can be given toSANTACRUZ ? (Assistant Grade, 1995).

a)75 b)85 c)120 d)123

SOL: (d): In the given code, A=1, B=2, C=3, ……….Z=26.


SITAMS

So, PALAM=16+1+12+1+13=43Similarly, SANTACRUZ=19+1+14+20+1+3+18+21+26=123.

Directions (Questions 20 to 22): The number in each question below is to be codified in thefollowing code: (Railways, 1991)

Digit 7 2 1 5 3 9 8 6 4Letter W L M S I N D J B

20. 184632(a)MDJBSI (b) MDJBIL (c) MDJBWL (d) MDBJIL (e) none of these

SOL: the correct answer is (d). As given, 1 is coded as m, 8 as D, 4 as B, 6 as J, 3 as Iand 2 as L. So 184632 is coded as MDBJIL.

21. 879341(a) DWNIBS (b) DWNBIM (c) DWNIBM (d) NDWBIM (e) none ofthese

SOL: the correct answer is (c). As given 8 is coded as D, 7 as W, 9 as N, 3 as I, 4 as Band 1 as M. So 879341 is coded as DWNIBM.

22. 64928

(a) JBNLD (b) JBLND (c) BJNLD (d) DBNLS (e) None of these

SOL: the correct answer is (a): As given , 6 is coded as J, 4 as B, 9 as N, 2 as L, and 8 as D.So, 64928 is coded as JBNLD

23. In a certain code, 15789 is written as XTZAL and 2346 is written as NPSU. How is23549 written in that code ?(Bank P.O 1989).

(a)NPTUL (b)PNTSL (c)NPTSL (d NBTSL (e)None of these

SOL: the correct answer is (c): The numbers are coded as shown:

1 5 7 8 9 2 3 4 6

A X B T C M P D U

i.e., 2 as N, 5 as T, 4 as S and 9 as L. So, 23549 is coded as NPTSL.


SITAMS

Questions 24 to 25: (I.Tax & Central Excise, 1996)

MATRIX 1

0 1 2 3 40 D K A E C1 C D K A E2 K C E A D3 K C D E A4 E D A K C

MATRIX 2

5 6 7 8 95 P L O T N6 T P N L O7 P N T O L8 O N T P L9 L O P N T

24. Find for POND?

a)88,99,76,22 b) 57,78,59,32 c) 66,96,76,11 d) 57,68,89,42

SOL: From matrix 2, P can be coded as 55,66,75,88 or 97.


From matrix 2,N can be coded as 59,67,76,86 or 98.

From matrix 1, D can be coded as 00,11,24,32 or 41.

Clearly, only (c) contains all correct codes.

25. Find for DONE ?a) 00,57,76,41 b) 11,78,71,41 c) 10,57,76,37 d)78,11,20,41

SOL: From matrix 1, D can be coded as 00,11,24,32 or 41


From matrix 2,N can be coded as 59,67,76,86 or 98.

From matrix 1, E can be coded as 03,14,22,33 or 40.

Clearly, only (a) contains all correct codes.


SITAMS

Questions 26 to 28: (S.S.C. 1996)

MATRIX 1

0 1 2 3 40 F A N O I1 I O F A N2 A N O I F3 O F I N A4 N I A F O

MATRIX 2

5 6 7 8 95 S E H B T6 H S E T B7 B T S E H8 E H T B S9 T S E H B

26. Find for NEST ?a)33,85,88,86 b)21,76,77,76 c)14,67,66,67 d)02,56,55,59

SOL: From matrix 1, N can be coded as 02,14,21,33 or 40.

From matrix 2,E can be coded as 56,67,78,85 or 97.

From matrix 2,S can be coded as 55,66,77,89 or 96.

From matrix 2, T can be coded as 59,68,76,87 or 95.


27. . Find for FAITH ?a)43,42,41,78,89 b)31,34,23,76,79 c)24,31,10,59,57 d)12,20,40,68,65

SOL: From matrix 1, F can be coded as 00,12,24,31 or 43.

From matrix 1,A can be coded as 01,13,20,34 or 42.From matrix 1, I can be coded as 04,10,23,32 or 41.From matrix 2, T can be coded as 59,68,76,87 or 95.From matrix 2, H can be coded as 57,65,79,86 or 98.

Clearly, only (b) contains all correct codes.


SITAMS

28. . Find for FINE ?a)31,32,33,82 b)24,19,21,78 c)12,10,13,67 d)00,04,02,56

SOL: From matrix 1, F can be coded as 00,12,24,31 or 43.

From matrix 1, I can be coded as 04,10,23,32 or 41.From matrix 1, N can be coded as 02,14,21,33 or 40.From matrix 2,E can be coded as 56,67,78,85 or 97.


29. If ROOM is called BED, BED is called WINDOW, WINDOW is called FLOWER andFLOWER is called COOLER, on what would a man sleep? (Bank P.O. 1994)

(a) WINDOW (b)BED (c)FLOWER (d)COOLER

SOL: (a). A man sleeps on a bed and as given, bed is called window. So, the man willsleep on a window.

30. If SAND is called AIR, Air is called PLATEAU, PLATEAU is called WELL, WELL iscalled ISLAND and Island is called SKY, then from where will a woman draw water?

(B.S.R.B. 1998)(a) WELL (b) ISLAND (c)SKY (d)AIR

SOL: (b). A woman shall draw water from a well but well is called island. So, the womanwill draw water from an island.

31. If CLOUD is called WHITE, WHITE is called RAIN, RAIN is called GREEN, GREENis called AIR, AIR is called BLUE and BLUE is called WATER, where will the birdsfly? (Bank p. o. 1991)

a) AIR b)CLOUD C)WHITE d)RAIN e)BLUE

SOL: (e). Clearly the birds fly in the AIR and AIR is called BLUE. So, The birds fly in theBLUE.

32. If AIR is called GREEN, GREEN is called BLUE, BLUE is called SKY,SKY is calledYELLOW, YELLOW is called WATER and WATER is called PINK, then what is thecolour of clear sky ? (S. B.I.P.O. 1994)

a) BLUE b)SKY c)YELLOW d)WATER e)PINK

SOL: (b). Colour of clear sky is BLUE and as given, BLUE is called SKY. So, the colourof clear sky is SKY.


SITAMS

33. If SKY is called SEA, SEA is called WATER, WATER is called AIR, AIR is calledCLOUD and CLOUD is called RIVER, then what do we drink when thirsty?

(Bank P.O 1996)

a)SKY b)AIR c)WATER d)SEA e)CLOUD

SOL: (b) One drinks WATER when thirsty and as given, WATER is called AIR.

34. In a certain code,’ nee tim see’ means ‘how are you’, ’ble nee see’ means ‘where areyou’, what is code for ‘where’? (Assistant Grade,1995)

(a)nee (b)tim (c)see (d)ble

SOL: (d). In the first and second statements the common word is ‘nee’ and ‘see’ means‘are’ and ‘you’. So in the second statement, the remaining code ‘ble’ means‘where’.

35. If ‘sti nro kti’ stands for ‘clouds pour down’,’nro bsi mit’ stands for ‘down he goes’ and‘bsi nro zpi’ stands for ‘died down he’,which would mean ‘goes’? (Bank P.O 1992)

(a)nro (b)mit (c)kti (d)bsi

SOL: (b). In the first and second statements, the common code word is ‘nro’ and thecommon word is ‘down’. So, ‘nro’ means ‘down’.

36. If ‘gnr tag zog qmp’ stands for ‘Seoul Olympic Organising committee’; hyto gnr emf’stands for ‘summer Olympic games’ and ‘esm sdr hyto’ stands for ‘modern games history’,what would be the code for ‘summer’ ? (I.Tax & Central Excise, 1989)

a)hyto b)gnr c)emf d)zog

SOL: (c). In first and second statements, the common code word is ‘gnr’ and the commonword is ‘Olympic’. So, ‘gnr’ means‘Olympic’.

In the second and third statements , the common code word is ‘hyto’ and thecommon code word is ‘games’. So, ‘hyto’ means ‘games’.

Thus, in the second statement, ‘emf’ means ‘summer’.

37. In a code language, ‘mok dan sil’ means ‘nice big house’; ‘fit kon dan’ means ‘house isgood’ and ‘warm tir fit’ means ‘cost is high’. Which word stands for ‘good’ in thatlanguage ? (B.S.R.B 1995)

a)mok b)dan c)fit d)kon


SITAMS

SOL: (d) , In the first and second statements, the common code word is ‘dan’ and thecommon word is ‘house’. So, ‘dan’ stands for ‘house’.

In the second and third statements, the common code word is ‘fit’. So, ’fit’ stands for ‘is’Thus, in the second statement, ‘kon’ stands for ‘good’.

38. In certain code language, ‘Tom Kun Sud’ means “Dogs are barking’; ‘Kun Jo Mop’means ‘Dogs and Horses’ and ‘Mut Tom Ko’ means ‘Donkeys are mad’. Which word inthat language means ‘barking’ ? (Railways, 1991)

a)Sud b)Kun c)Jo d)Tom e)Ko

SOL: (a). In the first and second statements, the common code word is ‘Kun’ and thecommon word is ‘Dogs’. So, ‘Kun’ means ‘Dogs’.

In the first and third statements, the common code word is ‘Tom’ and the common word is‘are’. So, ‘Tom’ means ‘are’.

Thus, in the first statements, ‘Sud’means ‘barking’.

39. If ‘nitco sco tingo’ stands for ‘softer than flower’; ‘tingo rho mst’ stands for ‘sweetflower fragrance’ and ‘mst sco tmp’ stands for ‘sweet than smile’ , what would‘fragrance’ stands for ? (Central Excise, 1989)

a)rho b)mst c)tmp d)sco

SOL: (a). In the first and second statements, the common code word is ‘tingo’ and thecommon word is ‘flower’. So, ‘tingo’ stands for ‘flower’.

In the second and third statements, the common code word is ‘mst’ and the common word is‘sweet’. So, ‘mst’ stands for ‘sweet’.

Thus, in the second statements, ‘rho’ stands for ‘fragrance’.

40. In a certain code, ‘37’ means ‘which class’ and ‘583’ means ‘caste and class’. What is thecode for caste? (Bank P.O. 1993)

(a)3 (b)7 (c)8 (d)either 5 or 3 (e)either 5 or 8

SOL: (e). In the given statements the common code digit is ‘3’ and the common word is‘class’. So, ‘3’ means ‘class’.

Thus, in the second statement, either 5 or 8 stands for ‘caste’.

41. In a certain code ‘256’ means ‘you are good’, ‘637’ means ‘we are bad’ and ‘358’ means‘good and bad’. Which of the following represents ‘and’ in that code? (Railways, 1994)

(a)2 (b)5 (c)8 (d)3


SITAMS

SOL: (c). In the first and third statements, the common code digit is 5 and common word is‘good’. So, 5 means ‘good’.

In the second and third statements the common code digit is 3 and common word is ‘bad’.So,3 means ‘bad’.

Thus, in the third statement, 8 means ‘and’.

42. In certain code, ‘247’ means ‘spread red carpet’; ‘256’ means ‘dust one carpet’ and ‘234’means ‘one red carpet’. Which digit in that code means ‘dust’ ? (R.B.I. 1990)

a)2 b)3 c)5 d)6

SOL: (c). In the first and second statements, the common code digit is ‘2’ and the commonword is ‘carpet’. ‘2’ means ‘carpet’.

In the second and third statements, the common code digit is ‘6’ and the common word is‘one’. So, ‘6’ means ‘one’. Therefore, in the second statement, ‘5’ means ‘dust’.

43. In certain code, ‘123’ means ‘hot filtered coffee’; ‘356’ means ‘very hot day’ and ‘589’means ‘day and night’. Which digit in that code means ‘very’ ? (B.S.R.B. 1995)

a)9 b)5 c)8 d)2 e)6

SOL: (e). In the first and second statements, the common code digit is ‘3’ and the commonword is ‘hot’. ‘3’ means ‘hot’.

In the second and third statements, the common code digit is ‘5’ and the common word is‘day’. So, ‘5’ means ‘day’. Therefore, in the second statement, ‘6’ means ‘very’.

44. In certain code language, ‘851’ means ‘good sweet fruit’; ‘783’ means ‘good red rose’and ‘341’ means ‘rose and fruit’. Which of the following digit stands for ‘sweet’ in thatlanguage ? (B.S.R.B. 1998)

a)8 b)5 c)1 d)3 e)None of these

SOL: (b). In the first and second statements, the common code digit is ‘8’ and the commonword is ‘good’. ‘8’ means ‘good’.

In the first and third statements, the common code digit is ‘1’ and the common word is‘fruit’. So, ‘1’ means ‘fruit’. Thus, in the first statement, ‘5’ means ‘sweet’.

45. In certain code language, ‘479’ means ‘fruit is sweet’; ‘248’ means ‘very sweet voice’and ‘637’ means ‘eat fruit daily’. Which of the following digit stands for ‘is’ in thatlanguage ? (B.S.R.B. 1995)

a)7 b)9 c)4 d)Can’t be determined e)None of these

SOL: (b). In the first and second statements, the common code digit is ‘4’ and the commonword is ‘sweet’. ‘4’ means ‘sweet’.

In the first and third statements, the common code digit is ‘7’ and the common word is‘fruit’. So, ‘7’ means ‘fruit’. Thus, in the first statement, ‘9’ means ‘is’.


SITAMS

46. In certain code language, ‘253’ means ‘books are old’; ‘546’ means ‘man is old’ and‘378’ means ‘buy good books’. Which of the following digit stands for ‘are’ in thatlanguage ? (S.B.I.P.O. 1990)

a)2 b)4 c)5 d)6 e)9

SOL: (b). In the first and second statements, the common code digit is ‘5’ and the commonword is ‘old’. ‘5’ means ‘old’.

In the first and third statements, the common code digit is ‘3’ and the common word is‘books’. So, ‘3’ means ‘books’. Thus, in the first statement, ‘2’ means ‘are’.

Questions(47-48): (A.A.O. Exam, 1988)

COLUMN 1 COLUMN 2

DELIBERATION aemrqs

CONSIDERATE ccehlmoGHOSTLIKE cfhmoqqrxWORLDLY cdgmqrsxzKNOWLEDGE adefmopqqszROCKET cefkmopqqszz

47. KNIGHT(a)fgrsxz (b)gprsxz (c)fhmpqr (d)ghrxyz

SOL: (a). we first find the exact codes for given word.

DELIBERATION is a 12 letter word. Hence its code is cefkmopqqszz.

CONSIDERATE is a 11 letter word.So its code is adefmopqqsz.

Similarly find for another words.

In all words the common letter is ‘O’ and common code letter is ‘m’.Hence ‘O’ means ‘m’.

In WORLDLY and ROCKET, the common letters are O & R. code letter for O is ‘m’, thenother common code letter ‘e’ stands for R.

Similarly find code letters for others. The information can be summarized as bellow:

code m e c o h l Q r s a x f z d g p kletter O R L D W Y E K T C G N I S H A B

For KNIGHT: The code for ‘K’ is ‘r’,for ‘N’ is ‘f’, for ‘I’ is ‘z’, for ‘G’ is ‘x’, for ‘H’ is ‘g’and for ‘T’ is ‘s’. So, the code for KNIGHT is ‘fgrsxz’ or ’rfzxgs’.


SITAMS

48. NOTICE(a)acdeqs (b)afmqsz (c)efhpqs (d)fghpqr

SOL: (b). code for ‘N’ is ‘f’,for ‘O’ is ‘m’, for ‘T’ is ‘s’, for ‘I’ is ‘z’, for ‘C’ is ‘a’ and for‘E’ is ‘q’. So, the code for NOTICE is ‘fmszaq’ or ‘afmqsz’.

49. WORDYa)fhlmq b)ehlmo c)efhlm d)adeop

SOL: (b). The code for W is h, for O is m, for R is e, for D is o and for Y is l. So, the codefor WORDY is hmeol or ehlmo.

50. BLOATa)lkpqz b)hmpqz c)cmpqs d)ckmps

SOL: (d). The code for B is k, for L is c, for O is m, for A is p and for T is s. So, the codefor BLOAT is kcmps or ckmps.


SITAMS

QUESTION BANK:

Questions(1-5):

LETTER: C Z N V R S W F D

CODE DIGIT: 8 6 4 7 2 9 3 5 1

In each of the following questions find out the correctly coded alternative from among

st the given four alternatives (1),(2),(3),(4).if there is no correct alternative your answer willbe(5)

1. FRCSNW [Clerks Grade 1991]

(1)528243 (2) 5269435

(3)578943 (4)528963

(5)NONE OF THESE

2. ZDRCVF

(1)612875 (2)619875

(3)612845 (4)612835

(5))NONE OF THESE

3.WNCSZV

(1)348267 (2)318267

(3)348957 (4)348967

(5)NONE OF THESE

4.RDNFVS

(1)21679 (2)216549

(3)214579 (4)218579

(5) NONE OF THESE

5.NWZDVS

(1)438179 (2)423179

(3)456179 (4)436189


SITAMS

(5)NONE OF THESE

Questions(6-10):

FIND THE MISSING LETTERS IN THE FOLLOWING SERIES.

6.A,C,E,G___________ [Bank P.O 1992]

(A)I (B)k (C)M (D)H

7. A, D , H ,M ,__________ [central Excise 2001]

A) Q B) R C) S D)P

8. AZ, CX, FU, ___________ [Bank P.O. 2004]

A) JQ B) KP C) IR D) JV

9. LOAD is coded as ‘MPBE’ and DRIVE as ESJWF HOW YOU CODE LADDER?[L.I.C 2006]

A) NCFFGT B) MBEEFS

C) MDEEFS D) MBEESP

10. ‘START=WALKA’ and BUDPI=XZFMQ what should be ‘STUPID’ = ?[ASSISTANT GRADE 2001]

A) WAZMQF B) BAZMQF

C) WAZNOF D) WAZMMF

Questions(11-15):

NOTE: Here the coding scheme is A=Z,B=Y,C=X AND so on answer the following

11. LIMIT [BANK P.O. 2008]

A) KNRNG B) JKOKG

C) ORNRG D) MHLHS

12. SOUR

A)HLFI B) IFLT

C) IHIF D) FLTI

13. POCKET

A) KLXPUG B) KLXVPG

C) KLXPUC D) KLXPVG


SITAMS

14. GROUP

A) TILEL B) TILFK

C)TFGFK D)TILGH

15 ZERO

A)BUHN B) AUTL

C) AVIL D) AYTI

Questions(16-18):

NOTE: IN THE FOLLOWING THE CODE USED IS ASED ON THE SKIPPINGPATTERN.EACH LETTER IS CODED WITH THE FOURTH ONE IN ALPHABETICORDER,I.E A=(BC)D,B=(CD)E,C=(DE)F AND SO ON

16. SHOOT [C.B.I.1991]

A) TJPPR B) VKRRW C) UMSSX D) VKSSW

17. VWDUW

A) START B) STAIN C) STEPS D) STAND

18. GRZQ

A) OWNS B) DONE C) SHUT D) DOWN

19. IF ‘DBMDVUUB’ STANDS FOR CALCUTTA, HOW will you write ‘BOMBAY’ ?

A)DPNCBX B)CPMCBZ C)CPNCBZ D) DQODDX

20. In Certain Code ‘DELHI’ Is Written as ‘CDKGH’‘MADRAS’ as LZCQZR’ how willPATNA be coded?

A)OZSMZ B)QBUMB C)OZTMZ D)OZMSZ

Questions(21-13):

NOTE: if “TENDER” is coded as “SDMCDQ”. Select appropriate code for the words

21. SOUPS [R.R.B 1998]

A) PNTQS B) RMTOR C) RNTOR D) TRQUT

22. LIMITED

A) DETIMIL B)KHLHSDC C) DETIMIL D)KHLHSDE


SITAMS

23. PEONS

A) ODNMS B) ODNMT C) ODNMR D) ODMNR

NUMBER CODING:

24. if 12345671586 stands for “TERMINATION” what number code stands for“MOTION”?[C.D.S 2001]

A) 458569 B)481586 C) 438586 D) 458685

25.If BAD is coded as “5-4-7”,how will you code NATION? [C.C.D.S 1999]

A) 17-4-23-12-18-17

B) 17-4-22-18-18-17

C) 17-4-23-12-14-17

D) 17-5-21-11-18-16

26. if“ACT” is coded as “23-25-16”, HOW you code the “BELOW”

A) 23-8-11-19 B)24-8-10-19 C)23-8-11-18 D)24-8-11-19

27. If “BOOK” IS 43 and “PEN” IS 35 and “COPY” is

A) 48 B) 59 C) 60 D) 79

28. “DRAMA” is coded as 37 and “STAGE” as 52.how you will code “ACTOR”?

A) 50 B) 56 C) 65 D) 57

29. SUPER=79,SUPREME=97,LABOUR=? [EXCISE & I.T TAX 1998]

A) 49 B) 69 C) 79 D) 89

30. LIME =39,WHITE=? [R.R.B 2004]

A)65 B)66 C)56 D)75

31.if“BARS”=10 and “BEERT”=10,”DEEZ” will be ?

A)12 B)15 C)14 D)10

32. PEN=32,PAPER=51,DESK=?

A)35 B)40 C)80 D)10

33.ifM=13 and O=15 code DEAF [GATE 2000]

A)4316 B)4516 C)4518 D)4616


SITAMS

34. HIGH=5645, and “DEEM”=12210, how will you code”feel”?[GATE 2005]

A)3449 B) 4337 C) 3229 D) 2336

35. ifB=25 and C=24, encoded “96872”

A)RUSTY B)POSTS C)DUSTY D)HASTY

Questions(36,37):

NOTE:gopal is coded as “84321”and “TREES”AS 56779.Based on the above coding givecodes for the following [BANK P.O 1998]

36. GREAT

A)85725 B) 86925 C) 86725 D) 86625

37. PETER

A)37576 B)39596 C)97576 D)84346

38. IF CASE is coded as 5231 ,chair is coded as 58206 and TEACH is coded as 71258,what does 586037 stand for?

A)CHASTE B)CHRIST C)STREET D)CHEESE

39. in certain code BELOW is written as FCKVN. How is GIVEN written in that code?[R.R.B 2003]

A)JHWMD B)HJUMD C) JHMUD D) JHUMD

40. in a certain code BOARD is written as 54#12 and MORE IS written as 941$.how isDREAM written on that code? [CLERK GRADE 2001]

A)21$#9 B)2$1#9 C)51$#9 4)25$#9

41. If KEDGY is coded as EKDYG then how will LIGHT be coded ?(A) ILHTG (B) ILGHT (C) ILGTH (D) THGIL (E) None of these

42. If RAVE is coded as SXWB then how will SCAW be coded ?(A) TDBO (B) TZBK (C) PZXK (D) TVXK (E) None of these

43. If SPANK is coded as PSNAK then how will THROW be coded?(A) HTORW (B) HTWOR (C) HTWRO (D) HTRWO (E) None of theseAns : (A)44. If UDOMETER is coded as DUMOTERE then how will SUBLEASE be coded?(A) USLBESAE (B) USLBAEES (C) USBAELES (D) USLBEAES (E) None of these


SITAMS

45. If PURSER is coded as UPSRRE then how will PERIODIC be coded?(A) EPRIDOIC (B) PEIRDOCI (C) EPIRDOCI (D) EPIRODCI (E) None of these

46. If STRAY is coded as TUSBZ then how will MOURN be coded?(A) LPVSO (B) NPVSO (C) NVPSO (D) NPSVO (E) None of these

47. If MAGIC is coded as PXJFF then how will LEASH be coded?(A) PBDVD (B) OBDVL (C) OHEOK (D) OBDPK (E) None of these

48. If DOWN is coded as FQYP then how will WITH be coded?(A) KYN (B) JYK (C) YKVJ (D) JKVY (E) None of these

49. If BINARY is coded as DHPZTK then how will KIDNAP be coded?(A) MKFPCQ (B) MHFPZQ (C) IKFMYO (D) MHFMCO (E) None of these

50. If RASCAL is coded as QZRBZK then how will SOLDER be coded?(A) RNMEDQ (B) RPKED (C) TPMEFS (D) RNKCDQ (E) None of these

51. If SAVOURY is coded as OVUARSY then how will RADIATE be coded?(A) AIDARET (B) IDARA TE (C) ARIADTE (D) IDAATRE (E) None of these

52. If MAPLE is coded as VOKZN then how will CAMEL be coded?(A) OVNZF (B) OUNZX (C) OVNZX (D) XZNVO (E) None of these

53. If CRY is coded as MRYC then how will GET be coded?(A) MTEG (B) MGET (C) MEGT (D) METG (E) None of these

54. If BURNER is coded as CASOIS then how will ALIMENT be coded?(A) BKJLFMU (B) EKOLIMS (C) EMONIOU (D) BRJSFTU (E) EROSITU

55. If Sand is coded as Brick, Brick as House, House as Temple, Temple as Palace then where do youworship?(A) Palace (B) Temple (C) Brick (D) House (E) None of these

56. If Rajdoot is coded as Car, Car as Aeroplane, Aeroplane as Train, Train as Bus, then by whichvehicle can you reach your destination in least time? .(A) Aeroplane (B) Train (C) Car (D) Bus (E) None of these

57. If Pen is coded as Pencil, Pencil as Chalk, Chalk as Slate, Slate as Paper, then by which do youmostly write?(A) Pen (B) Pencil (C) Chalk (D) Slate (E) None of these

58. If Leader is coded as Actor, Actor as an Administrator, Administrator as a Traitor, Traitor as aSocial-reformer, then who takes part in the Parliamentary elections?(A) Administrator (B) Leader (C) Traitor (D) Social-Reformist (E) None of these


SITAMS

59. If '245' means—'Art and Talent' in a certain code language, '316' means— 'Callous to Generous','147' means— 'Callous and Polite' then what is the code used for 'to' ?(A) Only 3 (B) Only 1 (C) 3 or 6 (D) Only 6 (E) None of these

60. In a certain code language '579' means—'Kanchan is soft-spoken', '694' means—‘Soft-spokenbeautiful pure', '473' means—‘Ganga is pure', then what is the code used for 'Kanchan' ?(A) 7 (B) 5 (C) 9 (D) Can not be determined (E) None of these

61. In a certain code language '123' means—‘Mahendra is Able', '345' means—'Sunita is unlucky','526' means—'Mahendra was unlucky', then what is the code used for unlucky?(A) 2 (B) 3 (C) 1 (D) Can not be determined (E) None of these

62. In a certain code language '765' means—'Man Illness Hard-working', '478' means—'Illness HardBlood-Pressure', '826' means—'Blood-pressure Lazy Hard-working', then, For which word code '8'has been used?(A) Illness (B) Man (C) Hard (D) Blood-Pressure (E) None of these

63. If '678' means—'Society Family Husbandry', '574' means—'Husbandry Health Control', '342'means—'Health Census shop', then, Which code has been used for 'Health' ?(A) 7 (B) 5 (C) 4 (D) 2 (E) None of these

64. If 'KRN' means—'Callous collission life', 'RTP' means—'Life very sad', 'NPD' means—'Collission sadfuture' then what is the code used for 'Callous' ?(A) R (B) N (C) K (D) Can not be determined (E) None of these

65. If 'MLT' means—'Day is clear', 'LKS' means—'Life is sad', 'SMMO' means—'Clear or sad', thenwhat is the code used for 'Day' ?(A) T (B) K (C) MO (D) L (E) None of these


SITAMS

ANSWWERS

5 1 4 3 2 A B A B AC A D B C B A D C AD C A D B A D B D BA D A B C A C A C AC B A B C B D C D DD C D C A B B E C BE D C C A

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