Hello Friends,
IBPS PO Prelims 2016 2nd day exam has finished, here we have given Memory based Number Series questions. Candidates those who are all going to write the examination can check this pattern and make use it.
Directions : What should come in place of the question mark (?) in the following number series?
1). 7, 14, 30, 56, 93, ?
Solution:
Difference of difference
7…………16………..26………..37…………49
……9………….10…………11………..12…….
Answer: So 93 + 49 = 142
2). 23, 39, 32, 48, 41, ?
Solution:
Double difference
+16……. -7……..+16…….. -7
Answer: So 41 + 46 = 57
3). 11, 13, 20, 48, 111, ?
Solution:
13 + 1 …….23 – 1…….33 +1 ………
Answer: So 111 + 126 = 237
4).13, 17, 33, 97, ?, 1377
Solution:
4…….16…….64……256
Answer: So 97 + 256 = 353
5). 6, 3, 5, 4, 5, 11, 48, ?
Answer:
*0.5 + 0.5….. *1 + 1…….*2 + 2……… *4 + 4…… *8 +8
Answer: So 48 *8 + 8 = 392
6). 31, 33, 40, 68, 131, ?
Answer- 257
7). 463, 220, 139, 112, ?, 100
Answer- 103
8). 11, 16, 34, 66, 113, ?
Answer- 176
9). 12, 6.5, 7.5, 17, 42, ?
Answer- 584
10). 17, 30, 21, 34, 25, ?
Answer- 38
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