Sunday, November 4, 2018

Number sequence questions

( 1 )   6 , 12 , 21 , 33 , ____

A. 35

B. 40
C. 50
D. 48

Answer : D


( 2 )   4 , 9 , 20 , 43 , 90 , ____


A. 180

B. 183
C. 185
D. 187

Answer : C


 ( 3 )   2 , 3 , 5 , 6 , 7 , 9 , 10 , 11 , 13 , ____


A. 12

B. 15
C. 14
D. 17

Answer : C


Solution : there are three series in the original series


2 , 6 , 10 ...... , 3 ,7 , 11 and 5 , 9 , 13 -----


Difference of two consecutive terms is 4


( 4 )    1 , 5 , 21 , 57 ,  121 , ____


A. 150

B. 176
C. 200
D. 221

Answer : D


Solution : the difference between two consecutive number are ,



2^ 2 = 4


4^2 = 16


6^2 = 36


8^2 = 64


10^2 = 100



( 5 ) .       EDBA , KJHG , QPNM , ____


A. KIGH

B. QOMK
C. WVTS
D. ZXVU

Answer : C


Solution : in each term fist and second letters are in reverse of order , similarly third and fourth letters .





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