IBPS RRB PO Prelims 2020 Memory Based Paper (English Version)

IBPS RRB PO Prelims 2020 Memory Based Paper– (English Version)

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Reasoning Ability

Directions (1-5): Answer the questions based on

the information given below.

Seven persons A, B, C, D, E, F, and G are

sitting in a row facing north. They have different

ages 10, 12, 18, 20, 25, 26, and 32 but not

necessarily in the same order.

E sits third from the end of the row. Two persons

are sitting between E and the one whose age is

18. A is the youngest person and sits two places

away from the one whose age is 18. B is 26

years old and sits third to the left of F. D sits

second to the right of F who is not an immediate

neighbour of G. F is the eldest person. G is elder

than E but younger than D.

1. D’s age is _____

a) 20

b) 12

c) 26

d) 18

e) 25

2. What is the sum of the ages of G and C?

a) 36

b) 48

c) 38

d) 42

e) 28

3. The number of persons sit right of C is the

same as to the left of _____

a) The one whose age is 26

b) E

c) The one whose age is 20

d) A

e) D

4) Four of the following five are alike in a certain

way based on the given arrangement and so

form a group. Which of the following one does

not belong to that group?

a) G

b) B

c) D

d) F

e) C

5. What is the position of G with respect to the

one whose age is 12?

a) Immediate right

b) Immediate left

c) Second to the left

d) Third to the right

e) Second to the right

Directions (6-8): In each of the following

questions, the relationship between different

elements is shown in the statements followed by

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two conclusions. Find the conclusion which is

definitely true.

Give answer:

a) If only conclusion I follows.

b) If only conclusion II follows.

c) If either conclusion I or II follows.

d) If neither conclusion I nor II follows.

e) If both conclusions I and II follow.

6. Statements:

R ≥ T = V ≤ F , N = L > F

Conclusion:

I). N < V

II). L > R

7. Statements:

X > H = C <W , G > C = Y

Conclusion:

I). W > Y

II). H > G

8. Statements:

A = B ≥ C= D > T = V

Conclusion:

I). A ≥ D

II). C > V

Directions (9-10): Some statements are followed

by some conclusions. Read the statements

carefully and answer which of the conclusions

follows the given statement.

9. Statements:

Only a few Maida is Bread.

No Bread is Cream.

All Creams are Cakes.

Some Cake is Wheat.

Conclusions:

I. Some Maida is not Cream.

II. All Wheat can be Bread.

a) Only I follows

b) Only II follows

c) Either I or II follows

d) Neither I nor II follows

e) Both I and II follow

10. Statements:

All Bags are Jute.

Some Bag is Silk.

No Silk is Saree.

Only a few Sarees are Cotton.

Conclusions:

I. Some Jute is Cotton.

II. No Cotton is Jute.

a) Only I follows

b) Only II follows

c) Either I or II follows

d) Neither I nor II follows

e) Both I and II follow

Directions (11-15): Study the following

information carefully and answer the below

questions:

Eight persons P, Q, R, S, T, U, V, and W live on

4 different floors of the same building, such that

the bottom-most floor is numbered as 1 and

the floor just above 1 is numbered as 2 and so

on till the topmost floor is numbered as 4.

Each floor has two flats, flat 1 and flat 2. Flat 1 is

exactly to the west of flat 2. Only one person

lives in each flat.











T lives two floors above S who lives east of W.

The number of floors above T is the same as the

number of floors below U. Neither T nor U lives

in the same type of flat. R lives two floors above

the one who lives immediately below P. R and P

are living in the same type of flat. T lives neither

north nor north-east flat of V. The direction of U

with respect to W is the same as the direction of

P with respect to Q.

11) Who lives in flat 1 ofthe 3rd floor?

a) V

b) T

c) S

d) Q

e) P

12) As many floors above U is same as below

_____?

a) P

b) R

c) Q

d) W

e) S

13) Who among them lives on an even-

numbered floor?

I) R

II) T

III) Q

a) Only (I) and (II)

b) Only (II) and (III)

c) Only (III)

d) Only (I) and (III)

e) All are (I), (II) and (III)

14) Who lives in flat 1?

a) R

b) U

c) P

d) S

e) V

15) Four of the five among the following are

similar in such a way to form a group,

whoamong the following one doesn’t belong to

the group?

a) V, P

b) T, U

c) Q, S

d) R, T

e) Q, V


information carefully and answer the questions

given below:

In a certain code language:

“Indian Cuisines are best” is coded as “to ckzg

lm”

“You like Indian Cuisines” is coded as “tp lm to

mp”

“He like Indian Chinese” is coded as “tp lm cztz”

“He and you are best”is coded as “yompcktzzg”

16. What is the code for “you he” as per the

given code language?

a) mptz

b) mpzg

c) tz lm

d) yotp

e) to tp











17. What is the code for “like” as per the given

code language?

a) lm

b) to

c) tp

d) ck

e) zg

18. What may be the possible code for “I like

chinese” as per the given code language?

a) sl to lm

b) sltpcz

c) mptp lm

d) cz lm to

e) lm czmp

19. What is the code for “you are best” as per

the given code language?

a) mpckzg

b) ckzgtz

c) mpck lm

d) ck lm zg

e) None of these

20. Which of the following words have the code

of “to tp lm mp”?

a) best Cuisines are Indian

b) Cuisines you Indian and

c) Indian you are best

d) you like Indian cuisines

e) None of these

Directions (21-25): Answer the questions based

on the information given below.

A certain number of persons are sitting in a

straight row facing north direction.U sits eighth

to the left of V. U sits exactly between X and S.

Not more than two persons are sitting between

X and U. X sits fifth from the left end of the row.

T sits second to the right of S. T doesn’t sit

adjacent to U. Four persons are sitting between

T and W, who sits third to the left of Y, who sits

third from the end. More than four persons

aresitting between U and Z, who sits second

from one of the extreme ends of the row but not

an immediate neighbor of Y.

21) Who among the following person sits

between Z and S?

a) V

b) X

c) U

d) Both (a) and (b)

e) Both (b) and (c)

22) Who among the following person sits exactly

in the middle of the row?

a) The one who sits third to the right of U

b) T

c) The one who sits immediate left of T.

d) V

e) None of these

23) What is the position of V with respect to W?

a) Immediate left

b) Immediate right

c) Second to the right

d) Second to the left

e) None of these











24) How many persons are sitting to the left of

U?

a) Five

b) Six

c) Seven

d) Four

e) None of these

25) How many persons are sitting between Z

and S?

a) Six

b) Four

c) Seven

d) Eight

e) None of these

Direction (26-30): Answer the questions based

on the information given below.

Nine persons P, Q, R, S, T, U, V, W, and X are

sitting around a circular table but not necessarily

in the same order. Some of them are facing the

center and the remainingare facing opposite to

the center.All the persons are sitting at an equal

distance between them.

U sits third to the right V. Two-person sits

between U and T who face opposite to the

center. Neither V nor T is an immediate neighbor

of P. W sits second to the left of P who faces the

same direction as T. Q sits immediate left of W.

S sits third to the right of X who sits immediate

right of R. S and X faces the same direction. Not

more than two persons are facingthe same

directionsit together. R and T, not immediate

neighbours.

26) How many persons are sitting between X

and P when counted from the left of P?

a) Two

b) Four

c) Three

d) Five

e) None of these

27) Who among the following sits third to the

right of V?

a) The one who sits immediate right of Q

b) W

c) Q

d) The one who sits immediate left of P

e) None of these

28) Who is sitting adjacent to R?

a) X

b) S

c) V

d) Both (a) and (b)

e) Both (a) and (c)

29) Four of the following five pairs are alike in a

certain way based on the given arrangement

and so form a group. Which of the following one

does not belong to that group?

a) QU

b) PV

c) SU

d) RT

e) WP

30) What is the position of Q with respect to R?

a) 3rd to the left











b) 3rd to the right

c) 5th to the left

d) 2nd to the right

e) None of these


information carefully and answer the below

questions.

Ten boxes namely – P, Q, R, S, T, U, V, W, X,

and Y are kept one above the other in a stack

but not necessarily in the same order.

Box S is kept fourth from the bottom. Box

adjacent to S has kept four places below T,

which is kept just below the box W. The number

of boxes above W is one more than the number

of boxes below P. Two boxes are kept between

P and Q. Only three boxes are kept between Q

and R. Box Y has kept three boxes above box X.

The number of boxes between Y and W is the

same as the number of boxes between X and U.

31) What is the position of the box Y with

respect to S?

a) Three places above

b) Immediate above

c) Two places above

d) Immediate below

e) None of these

32) How many boxes are kept between W and

Q?

a) As many boxes are kept between X and T.

b) Five

c) Four

d) As many as boxes are kept between Y and R.

e) None of these

33) Which of the following statement is/are not

true?

a) Three boxes are kept between V and T.

b) Box Q has kept two places above T.

c) Box P is kept just below S.

d) One box is kept between W and Q.

e) All of the above statements are not true.

34) Find the odd one out?

a) PSX

b) QYW

c) TRW

d) YSQ

e) VWR

35) Which of the following box is kept three

places above Y?

a) P

b) V

c) S

d) R

e) None of these

36) How many pairs of letters are there in the

word “GERUNDER” each of which has as many

letters between them in the word as in the

English alphabetical series(both forward and

backward direction)?

a) Three

b) Two

c) Four

d) one

e) More than four













below.

Person A is 7m west of Person C. Person B is

6m South of person F. Person E is 3m North of

person G and 2m west of person C. Person D is

8m North of person F who is 10m west of person

A.

37) What is the shortest distance between D and

E?

a) 15m

b) 20m

c) 17m

d) 22m

e) 12m

38) What is the direction of G with respect to B?

a) Northwest

b) Southeast

c) West

d) Southwest

e) Northeast

39) Which of the following persons are in a

straight line?

a) CEF

b) AEG

c) DBC

d) AFB

e) CED

40) How many such numerals are there in the

number ‘5687264493’ which will remain at the

same position when arranged in ascending

order from right to left?

a) 1

b) 3

c) 2

d) 4

e) None of these

Quantitative Aptitude

Directions (41-45): What value should come in

the place of (?) in the following number series?

41) 12, 18, 36, 90, ?, 945

a) 360

b) 180

c) 270

d) 450

e) 540

42) 924, 581, 365, 240, 176, ?

a) 149

b) 132

c) 137

d) 143

e) 127

43) 2, 9, 23, ?, 107, 219

a) 48

b) 51

c) 68

d) 72

e) 64

44) 32, 39, 53, 74, 102, ?

a) 137











b) 143

c) 147

d) 133

e) 127

45) 18, 22, 38, 42, ?, 62

a) 55

b) 48

c) 52

d) 58

e) 60



given below.

The given table shows the total number of

students (ECE and CSE) and the number of

CSE students and the percentage of the number

of girls in CSE departments in four different

colleges.

46) Find the average number of boys in CSE

departments in all the colleges together?

a) 64

b) 66

c) 68

d) 72

e) 74

47) What is the ratio of the number of ECE

department students in A and E?

a) 11:7

b) 11:6

c) 3:2

d) 23:14

e) None of these

48) The number of students in E is 20% more

than the number of ECE students in B. If the

ratio of the number of CSE and ECE students in

E is 5:4, then find the number of CSE students

in E?

a) 360

b) 380

c) 400

d) 420

e) 440

49) The number of ECE students in C is what

percent of the number of girls in CSE in A and

D?

a) 294.11%

b) 296.13%

c) 298.15%

d) 292.19%

e) 290.23%

50) Find the average number of CSE students in

all the colleges together?

a) 214.5

b) 217.5











c) 219.5

d) 212.5

e) 220.5

51) The number of students in E is 80% more

than that of B and the number of CSE students

in E is 856. Find the difference between the

number of ECE students in D and E?

a) 74

b) 78

c) 76

d) 68

e) 70

Directions (52-56): Following question contains

two equations as I and II. You have to solve both

equations and determine the relationship

between them and give an answer as,

52)

I) x2 = 16

II) y2 – 8y + 16 = 0

a) x > y

b) x ≥ y

c) x = y or relationship can’t be determined.

d) x < y

e) x ≤ y

53)

I) 3x2 – 18x + 24 = 0

II) y2 – 9y + 18 = 0

a) x > y

b) x ≥ y


d) x < y

e) x ≤ y

54)

I) x2 – 27x + 180 = 0

II) y2 – 23y + 132 = 0

a) x > y

b) x ≥ y


d) x < y

e) x ≤ y

55)

I) x2 – 32x + 192 = 0

II) y2 – 50y + 625 = 0

a) x > y

b) x ≥ y


d) x < y

e) x ≤ y

56)

I) x3 = -343

II) y2 + 17y + 72 = 0

a) x > y

b) x ≥ y


d) x < y

e) x ≤ y

57) A, B and C started the business and the

investment of A and B in the ratio of 8:5 and the

investment of C is 20% more than that of B. If

the investment period of A, B and C is 8 months,

16 months and 12 months respectively and the











average of the profit share of B and C is

Rs.3420, then find the total profit of the

business?

a) Rs.9720

b) Rs.9740

c) Rs.9760

d) Rs.9780

e) None of these

58) Area of the square A and perimeter of

square B is 1024 cm2 and 88 cm respectively. If

the length of rectangle is 4 cm more than the

side of the square A and the breadth of the

rectangle is equal to the side of the square B,

then find the perimeter of the rectangle?

a) 112 cm

b) 116 cm

c) 118 cm

d) 120 cm

e) 108 cm

59) A bag contains 4 yellow, 3 pink and 5 blue

balls. If three balls are drawn at random, then

what is the probability of that one is pink and two

are yellow?

a) 9/220

b) 2/55

c) 1/44

d) 3/110

e) 1/55

60) The ratio of the marked to cost price of the

TV is 6:5 and the shopkeeper sold the TV at the

loss of Rs.x and the shopkeeper given the

discount of Rs.6x. Find the discount

percentage?

a) 10%

b) 15%

c) 20%

d) 18%

e) Cannot be determined



given below.

The given line graph shows the number of items

sold by Flipkart and Amazon on five different

days in a week.

1800

21001500

2280

12601500

2400 1920

1620

2520

0

500

1000

1500

2000

2500

3000

Flipkart Amazon

61) What is the average number of items sold by

Flipkart on all the days together?

a) 1788

b) 1790

c) 1784

d) 1792

e) 1794











62) The number of items sold by Amazon on

Tuesday and Wednesday together is what

percent of the number of items sold by Flipkart

on Tuesday and Wednesday together?

a) 110%

b) 115%

c) 120%

d) 125%

e) 130%

63) What is the difference between the number

of items sold by Flipkart on Tuesday, Thursday

and Friday together and the number of items

sold by Amazon on Tuesday and Friday

together?

a) 700

b) 710

c) 720

d) 740

e) 750

64) The number of item sold by Flipkart on

Wednesday and Friday together is what percent

of the total number of items sold by Amazon on

Monday and Tuesday together?

a) 70.76%

b) 71.85%

c) 73.24%

d) 78.25%

e) 68.89%

65) What is the difference between the average

number of items sold by Flipkart on Monday and

Tuesday together and the average number of

items sold by Amazon on Tuesday and

Wednesday together?

a) 216

b) 210

c) 198

d) 204

e) 192

66) What is the difference between the number

of items sold by Flipkart and Amazon together

on Monday and Wednesday together and the

number of items sold by Flipkart and Amazon

together on Tuesday and Thursday?

a) 1660

b) 1670

c) 1680

d) 1640

e) 1690

67) Chaitra invested Rs.8400 at (x + 5)% Simple

interest scheme for 3 years and Nila invested

Rs.8000 at x% compound interest scheme for 2

years. If the difference between the interest

received by Chaitra and Nila is Rs.2460, then

find the value of x?

a) 12%

b) 15%

c) 18%

d) 20%

e) 10%

68) Pipe A and B alone fill the tank in 30 hours

and 40 hours respectively and pipe C empties











the tank in 24 hours. In how many hours pipe A,

B and C together can fill the tank?

a) 40

b) 50

c) 30

d) 60

e) 20

69) Ratio of the ages of Kamal and Surya 8

years ago is 5:4. After 6 years, the average age

of Kamal and Surya is 59 years. If the average

of the present age of Surya and Karthy is 45

years, then find the age of Karthy after 3 years?

a) 45 years

b) 43 years

c) 42 years

d) 48 years

e) 40 years

70) A boat covers x km downstream and covers

(x - 63) km upstream in 9 hours. If the speed of

stream is 7 kmph, then find the speed of boat in

still water?

a) 10 kmph

b) 12 kmph

c) 14 kmph

d) 17 kmph

e) Cannot be determined

71) The average marks of 36 students in the

class is 56. If the teacher later found that, the

mark of two students is read as 54 and 42

instead of 48 and 45, find the actual average

mark of the class?

a) 52.87

b) 55.91

c) 57.86

d) 48.13

e) 50.67

72) The marked price of the mobile is Rs.7200.

If the shopkeeper gives two successive

discounts of x% and 10% respectively while he

gets the profit of x% and the selling price of the

mobile is Rs.5184, then find the cost price of the

mobile?

a) Rs.4320

b) Rs.4440

c) Rs.4280

d) Rs.4480

e) None of these

73) Ratio of the number of male and female

population in village A is 5:4 and the number of

male population increased by 15% and the

number of female population increased by 4800,

then now the ratio of the number of male to

female becomes 23:28. Find the initial number

of male population in A?

a) 6500

b) 7000

c) 7500

d) 8000

e) 9000

74) 320 m long train A crosses a platform at the

speed of 80 kmph in 27 seconds. If another train

B crosses the same platform at the speed of 48











kmph in 51 seconds, then find the length of train

B?

a) 400 m

b) 450 m

c) 300 m

d) 350 m

e) 200 m

75) Car A start from Kashmir with the speed of

90 kmph at 6 am and car B starts from Srinagar

at the speed of 105 kmph at 6.30 am. If the both

cars meet each other in 11.30 am, then find the

distance between Kashmir and Srinagar?

a) 1000 km

b) 990 km

c) 1110 km

d) 1020 km

e) 1080 km



given below.

There are 5400 products in two shops A and B

and three different products in each shop-Hair

oil, Body Lotion and perfume. 18.75% of the

total number of products in A is Perfume and 2/7

of the total number of products in B is Body

lotion. Average of total number of perfume in A

and the number of Body lotion in B is 630. Half

of the products in A is Hair oil and the ratio of

the total number of products in B to the number

of Perfume in B is 21:4.

76) Total number of Hair oil in A is what percent

of the number of body lotion in B?

a) 180%

b) 200%

c) 210%

d) 170%

e) 220%

77) What is the ratio of the number of Perfume

in B to the total number of Body lotion in A?

a) 4:5

b) 3:5

c) 4:9

d) 1:2

e) None of these

78) Find the total number of Body lotion in A and

B?

a) 1580

b) 1620

c) 1630

d) 1600

e) 1570

79) The number of products in C is thrice the

number of body lotion in B and the number of

body lotion in C is 5/4 of the number of perfume

in B. What is the difference between the number

of hair oil and perfume in C and A?

a) 420

b) 450

c) 480

d) 360

e) 390











80) The ratio of the number of sold to unsold

hair oil in A and B is 5:3 and 7:4 respectively.

Find the difference between the number of sold

and unsold hair oil in A and B together?

a) 720

b) 750

c) 780

d) 700

e) 800

Answers with Explanation

Directions (1-5):

1) Answer: E

2) Answer: C

3) Answer: A

4) Answer: C

5) Answer: C

We have,

• E sits third from the end of the row.

• Two persons are sitting between E and

the one whose age is 18.

• A is the youngest person and sits two

places away from the one whose age is

18.

From the above condition, there are two

possibilities.

Again we have,

• B is 26 years old and sits third to the left

of F.

• D sits second to the right of F who is not

an immediate neighbor of G.

From the above condition, case2 gets

eliminated.

Again we have,











• F is the eldest person.

• G is elder than E but younger than D.

From the above condition, case1 shows the final

arrangement

6) Answer: D

I). N < V ( N = L >F ≥ V) -> False

II). L > R (L > F ≥ V = T ≤ R) -> False

None Follows

7) Answer: A

I). W > Y (Y = C < W) -> True

II). H > G (H = C < G) -> False

Only Conclusion I follows

8) Answer: E

I). A ≥ D (A = B ≥ C =D) -> True

II). C > V (C = D > T= V ) -> True

Both Conclusion I and II follows.

9) Answer: E

Both I and II follow

10) Answer: C

Either I or II follows

Directions (11-15):

11) Answer: B

12) Answer: A

13) Answer: D

14) Answer: E

15) Answer: E

We have,

• T lives two floors above S who lives east

of W.

• The number of floors above T is the same

as the number of floors below U.

• Neither T nor U lives in the sametype of

flat.

From the above condition, there are four

possibilities.











Again we have,

• R lives two floors above the one who lives

immediately below P.

• R and P are living in the sametype of flat.

Again we have,

• T lives neither north nor north-east flat of

V.

• The direction of U with respect to W is the

same as the direction of P with respect to

Q.

From the above condition, case1, case3, and

case4 get eliminated. Case2 shows the final

arrangement.

Directions (16-20):

16) Answer: A

17) Answer: C

18) Answer: B

19) Answer: A

20) Answer: D

Directions (21-25):

21) Answer: E

22) Answer: C

23) Answer: D

24) Answer: C

25) Answer: D

• U sits eighth to the left of V.

• U sits exactly between X and S.

• Not more than two persons are sitting

between X and U.

• X sits fifth from the left end of the row.

• T sits second to the right of S.

• T doesn’t sit adjacent to U.











• Four persons are sitting between T

and W, who sits third to the left of Y,

who sits third from the end.

• More than four persons are sitting

between U and Z, who sits second

from one of the extreme ends of the

row but not an immediate neighbor of

Y.

• So, the final arrangement becomes:

Directions (26-30):

26) Answer: B

27) Answer: D

28) Answer: E

29) Answer: B

30) Answer: B

We have,

• U sits third to the right V.

• Two-person sits between U and T who

face opposite to the center.


possibilities.

Again we have,











• Neither V nor T is an immediate neighbor

of P.

• W sits second to the left of P who faces

the same direction as T.

• Q sits immediate left of W.

Again we have,

• S sits third to the right of X who sits

immediate right of R.

• S and X faces the same direction.

• Not more than two persons are facing the

same directions sit together.

• R and T, not immediate neighbors.


eliminated. Case2 shows the final arrangement.

Directions (31-35):

31) Answer: C

32) Answer: D

33) Answer: E

34) Answer: B

35) Answer: D

Final Arrangement

We have,

• Box S is kept fourth from the bottom.

• Box adjacent to S has kept four places

below T, which is kept just below the box

W.


possibilities.

Again we have,











• The number of boxes above W is one

more than the number of boxes below P.

• Two boxes are kept between P and Q.

• Only three boxes are kept between Q and

R.

From the above condition, Case1 gets

eliminated. Case2 has one more possibility.

Again we have,

• Box Y has kept three boxes above box X.

• The number of boxes between Y and W

is the same as the number of boxes

between X and U.


eliminated. Case2a shows the final

arrangement.

36) Answer: D

DE – only one pair

Directions (37-39):

37) Answer: C

38) Answer: E

39) Answer: A

40) Answer: C

The number to be arranged- 5 6 8 7 2 6 4 4 9 3

After the arrangement - 9 8 7 6 6 5 4 4 3 2











41) Answer: C

12 * 1.5 = 18

18 * 2 = 36

36 * 2.5 = 90

90 * 3 = 270

270 * 3.5 = 945

42) Answer: A

924 – 73 = 581

581 – 63 = 365

365 – 53 = 240

240 – 43 = 176

176 – 33 = 149

43) Answer: B

2 * 2 + 5 = 9

9 * 2 + 5 = 23

23 * 2 + 5 = 51

51 * 2 + 5 = 107

107 * 2 + 5 = 219

44) Answer: A

32 + 7 = 39

39 + 14 = 53

53 + 21 = 74

74 + 28 = 102

102 + 35 = 137

45) Answer: D

18 + 4 = 22

22 + 42 = 38

38 + 4 = 42

42 + 42 = 58

58 + 4 = 62

46) Answer: B

Number of CSE boys in A = 240 * 25/100 = 60

Number of CSE boys in B = 150 * 20/100 = 30

Number of CSE boys in C = 300 * 40/100 = 120

Number of CSE boys in D = 180 * 30/100 = 54

Required average = (60 + 30 + 120 + 54)/4

= 66

47) Answer: A

Required ratio = (900 – 240):(600 – 180)

= 660:420

= 11:7

48) Answer: C

Number of students in E = 120/100 * (750 – 150)

= 720

Number of CSE students in E = 720 * 5/9 = 400

49) Answer: A

Number of ECE students in C = 1200 – 300 =

900

Number of CSE girls in A = 240 * 75/100 = 180

Number of CSE girls in D = 180 * 70/100 = 126

Required % = 900/(180 + 126) * 100

= 294.11%

50) Answer: B

Required average = (240 + 150 + 300 + 180)/4

= 217.5

51) Answer: A

Number of students in E = 180/100 * 750 = 1350











Number of ECE students in E = 1350 – 856 =

494

Number of ECE students in D = 600 – 180 = 420

Required Difference = 494 – 420 = 74

52) Answer: E

x2 = 16

x = 4, -4

y2 – 8y + 16 = 0

y2 – 4y – 4y + 16 = 0

y(y – 4) – 4(y – 4) = 0

y = 4, 4

x≤y

53) Answer: C

3x2 – 18x + 24 = 0

3x2 – 12x – 6x + 24 = 0

3x(x – 4) – 6(x – 4) = 0

x = 4, 2

y2 – 9y + 18 = 0

y2 – 6y – 3y + 18 = 0

y(y – 6) – 3(y – 6) = 0

y = 6, 3

Relationship between x and y cannot be

established.

54) Answer: B

x2 – 27x + 180 = 0

x2 – 12x – 15x + 180 = 0

x(x – 12) – 15(x – 12) = 0

x = 12, 15

y2 – 23y + 132 = 0

y2 – 12y – 11y + 132 = 0

y(y – 12) – 11(y – 12) = 0

y = 12, 11

x≥y

55) Answer: D

x2 – 32x + 192 = 0

x2 – 24x – 8x + 192 = 0

x(x – 24) – 8(x – 24) = 0

x = 24, 8

y2 – 50y + 625 = 0

y2 – 25y – 25y + 625 = 0

y(y – 25) – 25(y – 25) = 0

y = 25, 25

x<y

56) Answer: A

x3 = -343

x = -7

y2 + 17y + 72 = 0

y2 + 8y + 9y + 72 = 0

y(y + 8) + 9(y + 8) = 0

y = -8, -9

x>y

57) Answer: A

Investment of A and B = 8:5

Investment of B and C = 100:120 = 5:6

Profit ratio of A, B and C = 8x * 8:5x * 16:6x * 12

= 8:10:9

Total profit of the business = 27/(19/2) * 3420 =

Rs.9720

58) Answer: B

Side of square A = (1024)(1/2) = 32 cm

Side of square B = 88/4 = 22 cm











Length of rectangle = 32 + 4 = 36 cm

Perimeter of rectangle = 2 * (36 + 22) = 116 cm

59) Answer: A

Required probability =(4C2 + 3C1)/12C3

= (6 + 3)/(2 * 11 * 10)

= 9/220

60) Answer: C

MP = 6a

CP = 5a

6a – 6x = 5a - x

a = 5x

MP = 6 * 5x =30x

Required % = 6x/30x * 100 = 20%

61) Answer: A

Required Average = (1800 + 2100 + 1500 +

2280 + 1260)/5

= 1788

62) Answer: C

Required % = (2400 + 1920)/(2100 + 1500) *

100

= 120%

63) Answer: C

Required Difference = (2100 + 2280 + 1260) –

(2400 + 2520)

= 720

64) Answer: A

Required % = (1500 + 1260)/(1500 + 2400) *

100

= 70.76%

65) Answer: B

Difference = (2400 + 1920)/2 - (1800 + 2100)/2

= 210

66) Answer: C

Required difference = (2100 + 2400 + 2280 +

1620) - (1800 + 1500 + 1500 + 1920)

= 1680

67) Answer: B

Interest received by Chaitra = 8400 * (x + 5) *

3/100

= 252x + 1260

Interest received by Nila = 8000 * (1 + x/100)2 –

8000

252x + 1260 - 8000 * (1 + x/100)2 + 8000 = 2460

252x - 8000 * (1 + x/100)2 = -6800

x = 15%

68) Answer: D

A + B + C = 1/30 + 1/40 – 1/24

= 4 + 3 – 5/120

= 1/60

69) Answer: A

Kamal + Surya = 59 * 2 – 12 = 106

9x + 16 = 106

x = 10

Present age of Surya = 4 * 10 + 8 = 48 years

Karthy = 45 * 2 – 48 = 42

Required age = 42 + 3 = 45 years











70) Answer: E

x/(y + 7) + (x -63)/(y – 7) = 9

We cannot find the answer.

71) Answer: B

Required average = 56 – ((54 + 42) – (48 +

45))/36

= 55.91

72) Answer: A

7200 * (100 – x)/100 * 90/100 = 5184

100 – x = 80

x = 20%

CP of mobile = 5184 * 100/120 = Rs.4320

73) Answer: D

(5x * 115/100)/(4x + 4800) = 23/28

92x + 110400 = 161x

x = 1600

Male population in A = 5 * 1600 = 8000

74) Answer: A

320 + Length of platform = 80 * 5/18 * 27

Length of platform = 280 m

Length of train B + 280 = 48 * 5/18 * 51

Length of train B = 400 m

75) Answer: D

Car A covers 45 km in 30 minutes.

Total distance = D

Relative distance = D - 45

D – 45/(90 + 105) = 5

D = 975 + 45

D = 1020 km

Directions (76-80):

Total number of products = 5400

Total number of products in A = x

Total number of products in B = 7y

Number of perfume in A = x * 18.75/100 =

18.75x/100

Number of body lotion in B = 2/7 * 7y = 2y

2y + 18.75x/100 = 630 * 2 = 1260 ----(1)

x + 7y = 5400 ----(2)

From (1) and (2)

x = 2880

y = 360

Number of perfume in A = 18.75 * 2880/100 =

540

Number of body lotion in B = 2 * 360 = 720

Total number of products in B = 7 * 360 = 2520

Number of hair oil in A = 2880/2 = 1440

Number of Body lotion in A = 2880 – 1440 – 540

= 900

Number of perfume in B = 4/21 * 2520 = 480

Number of hair oil in B = 2520 – 480 – 720 =

1320

76) Answer: B

Required % = 1440/720 * 100 = 200%

77) Answer: E

Required ratio = 480:900

= 8:15

78) Answer: B

Required total = 900 + 720 = 1620

79) Answer: A











Number of products in C = 3 * 720 = 2160

Number of body lotion in C = 5/4 * 480 = 600

Number of hair oil and perfume in C = 2160 –

600 = 1560

Number of hair oil and perfume in A = 1440 +

540 = 1980

Difference = 1980 – 1560 = 420

80) Answer: A

Number of sold hair oil in A = 5/8 * 1440 = 900

Number of unsold hair oil in A = 3/8 * 1440 =

540

Number of sold hair oil in B = 7/11 * 1320 = 840

Number of unsold hair oil in B = 4/11 * 1320 =

480

Difference = (900 + 840) – (540 + 480)

= 720








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IBPS RRB PO Prelims 2020 Memory Based Paper (English Version)

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