Bankers Adda_ All About Number Series
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All About Number Series What is Number Series? N umber series is a arrangement of numbers in a certain order, where some numbers are wrongly put into the series of numbers and some number is missing in that series, we need to observe and find the accurate number to the series of numbers. In competitive exams number series are given and where you need to find missing numbers. The number series are come in different types. At first you have to decided what type of series are given in papers then according with this you have to use shortcut tricks as fast as you can . Different types of Number Series There are some format of series which are given in Exams. Perfect Square Series: This Types of Series are based on square of a number which is in same order and one square number is missing in that given series. Example 1: 441, 484, 529, 576? Answer: 441 = 21 2 , 484 = 22 2 , 529 = 23 2 , 576 = 24 2 , 625 = 25 2 . Perfect Cube Series: This Types of Series are based on cube of a number which is in same order and one cube number is missing in that given series Example 2: 1331, 1728, 2197, ? Answer : 11 3 , 12 3 , 13 3 , 14 3 Geometric Series: This type of series are based on ascending or descending order of numbers and each successive number is obtain by multiplying or dividing the previous number with a fixed number. Example 3: 5, 45, 405, 3645,? Answer: 5 x 9 = 45, 45 x 9 = 405, 405 x 9 = 3645, 3645 x 9 = 32805. Two stage Type Series: A two tier Arithmetic series is one in which the differences of successive numbers themselves form an arithmetic series. Example 4: i. 3, 9, 18, 35, 58,—— ii. 6, 9, 17, 23,———
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Number series practice questions
Transcript of Bankers Adda_ All About Number Series
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AllAboutNumberSeriesWhatisNumberSeries?
Numberseries isaarrangementofnumbers inacertainorder,wheresomenumbers are wrongly put into the series of numbers and some number ismissing in thatseries,weneed toobserveand find theaccuratenumber totheseriesofnumbers.
In competitive exams number series are given andwhere you need to findmissingnumbers.Thenumberseriesarecomeindifferenttypes.Atfirstyouhavetodecidedwhat typeofseriesaregiven inpapersthenaccordingwiththisyouhavetouseshortcuttricksasfastasyoucan.
DifferenttypesofNumberSeries
TherearesomeformatofserieswhicharegiveninExams.
PerfectSquareSeries:
This Types of Series are based on square of a number which is in sameorderandonesquarenumberismissinginthatgivenseries.
Example1:441,484,529,576?
Answer:441=212,484=222,529=232,576=242,625=252.
PerfectCubeSeries:
ThisTypesofSeriesarebasedoncubeofanumberwhichisinsameorderandonecubenumberismissinginthatgivenseries
Example2:1331,1728,2197,?
Answer:113,123,133,143
GeometricSeries:
This typeofseriesarebasedonascendingordescendingorderofnumbersandeachsuccessivenumberisobtainbymultiplyingordividingthepreviousnumberwithafixednumber.
Example3:5,45,405,3645,?
Answer:5x9=45,45x9=405,405x9=3645,3645x9=32805.
TwostageTypeSeries:
A two tier Arithmetic series is one in which the differences of successivenumbersthemselvesformanarithmeticseries.
Example4:i.3,9,18,35,58,
ii.6,9,17,23,
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MixedSeries:
This type of series aremore than one different order are given in a serieswhicharrangedinalternatively inasingleseriesorcreatedaccordingtoanynonconventional rule. This mixed series Examples are describes inseparately.
Examples5:
11,24,50,102,206,?
Answer:
11x2=22+2=24,
24x2=48+2=50,
50x2=100+2=102,
102x2=204+2=206,
206x2=412+2=414.Sothemissingnumberis414.
NumberSeriesQuiz
Directions(110):Whatwill come inplaceof thequestionmarks (?) in thefollowingNumberseries?1.0,6,24,60,120,210,?
A.336B.349C.312D.337E.Noneofthese
2.11,14,19,22,27,30,?A.39B.34C.36D.35E.Noneofthese
3.6,12,21,?,48A.33B.39C.36D.31E.Noneofthese
4.18,22,30,?,78,142A.44B.35
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C.46D.48E.Noneofthese
5.73205,6655,605,55,?A.9B.5C.13D.11E.Noneofthese
6.25,100,?,1600,6400A.400B.300C.360D.420E.Noneofthese
7.125,?,343,512,729,1000A.216B.215C.256D.225E.Noneofthese
8.1,9,125,343,?,1331A.730B.729C.512D.772E.Noneofthese
9.121,144,169,?,225A.180B.172C.186D.196E.Noneofthese
10.?,2116,2209,2304,2401,2500A.2124B.1972C.1521D.2025E.Noneofthese
AnswerswithExplanation:
1.(A)Thegivenseriesis:131,232,333,434,535,636,
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Sothemissingterm=737=3437=336.
2.(D)Thepatternis+3,+5,+3,+5,Sothemissingtermis=30+5=35.
3.(A)Thepatternis+6,+9,+12,+15..Sothemissingtermis=21+12=33.
4.(C)Thepatternis+4,+8,+16,+32,+64Sothemissingtermis=30+16=46.
5.(B)5x11=55,55x11=605,605x11=6655,6655x11=73205
6.(A)25x4=100,100x4=400,400x4=1600,1600x4=6400.
7.(A)125=53,216=63,343=73,512=83,729=93,1000=103.
8.(B)13,33,53,73,93,113
9.(D)121=112,144=122,169=132,196=142,225=152.
10.(D)2025=452,2116=462,2304=482,2401=492,2500=502
TIMETAKEN
Within5min:EXCELLENT58min:YOUCANDOBETTERMorethan8min:YOUNEEDTOWORKHARD
