Number Series Asked in IBPS PO - VI (Prelim) Exam - 22.10.2016 (1st Shift)

Directions (1-5): What should come in place of the question mark (?) in the following number series? 

1. 7        14        30        56        93        ?
a) 142
b) 403
c) 124
d) 96
e) 124

2. 23        39        32        48        41        ?
a) 58
b) 57
c) 59
d) 48
e) 84

3. 11
        13        20        48        111        ?
a) 237
b) 125
c) 273
d) 255
e) 555

4. 13
        17        33        97        ?        1377
a) 259
b) 563
c) 535
d) 455
e) 353

5. 6
        3.5        4.5        11        48        ?
a) 96
b) 56
c) 392
d) 192
e) 292


Answers:

1. a) 142

Solution:


2. b) 57

Solution:


3. a) 237

Solution:
11 + (13 + 1) = 11 + 3 = 13
13 + (23 - 1) = 13 + 7 = 20
20 + (33 + 1) = 20 + 28 = 48
48 + (43 - 1) = 48 + 63 = 111
111 + (53 + 1) = 111 + 126 = 237

4. e) 353

Solution:


5. c) 392

Solution:
6 x 0.5 + 0.5 = 3.5
3.5 x 1 + 1 = 4.5
4.5 x 2 + 2 = 11
11 x 4 + 4 = 48
48 x 8 + 8 = 392

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