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.


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