Number Series Asked in IBPS PO - VI (Prelim) Exam - 16.10.2016 (3rd Shift)

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

1. 14, 25, 47, 91, ?, 355
a) 100
b) 197
c) 179
d) 335
e) 155

2. 11, 24, 44, 70, 101, ?
a) 136
b) 102
c) 80
d) 102
e) 163

3. 18, 8, 6, 8, 24, ?
a) 6
b) 48
c) 24
d) 176
e) 167

4. 28, 32, 23, 39, 14, ?
a) 30
b) 50
c) 55
d) 6
e) 14

5. 5, 12, 33, 136, 675, ?
a) 5569
b) 4426
c) 5046
d) 4065
e) 4056

Answers:

1. c) 179

Solution: 
14, 25, 47, 91, ?, 355
14 * 2 - 3 = 25
25 * 2 - 3 = 47

47 * 2 - 3 = 91

91 * 2 - 3 = 179

2. a) 136

Solution:
11, 24, 44, 70, 101, ?

3. d) 176

Solution:
18, 8, 6, 8, 24,?

18 * 0.5- 1 = 8

8  * 1- 2 = 6

6* 2 - 4 = 8

8 * 4 - 8 = 24

24*8 - 16 = 176

4. b) 50

Solution:
28, 32, 23, 39, 14, ?

5. e) 4056

Solution:
5, 12, 33, 136, 675, ?
5 * 2 + 2 = 12
12 * 3 - 3 = 33

33 * 4 + 4 = 136

136 * 5 - 5 = 675

675 * 6 + 6 = 4056

Thanks.