# Number Series asked RRB PO Prelim 10 September 2017

These questions are based on Number Series asked in RRB PO Prelims â€“ Shift 1.Â Number Series asked IBPS RRB PO Prelim 10 September 2017.

1. 3, 5, 13, 49, ?, 1441
A) 248
B) 295
C) 241
D) 374
E) 352
Â  Option C
Pattern
:
*2 – 1, *3 – 2, *4 – 3…….
2. 0.5, 12, 52, 106, 107, ?
A) 54
B) 43
C) 34
D) 38
E) 46
Â  Option A
Pattern
:
*8 + 8, *4 + 4, *2 + 2, *1 +1, *0.5 + 0.5
3. 39, 31, 41, 29, 43, ?
A) 24
B) 34
C) 27
D) 21
E) 35
Â  Option C
Pattern
:
-8, +10, -12, +14, -16
4. 221, 109, 53, 25, 11, ?
A) 2
B) 6
C) 5
D) 4
E) 7
Â  Option D
Pattern
:
221 – 3 = 218, 218/2 = 109…………..
11 – 3 = 8, 8/2 = 4
5. 131, 67, 35, 19, 11, ?
A) 4
B) 8
C) 5
D) 6
E) 7
Â  Option D
Pattern
:
131+3= 134, 134/2 = 67….
11+3 = 14, 14/2 = 7

Click here for Number Series Questions – Memory Based NICL AO, SBI PO

## 6 Thoughts to “Quantitative Aptitude: Number Series 37 (based on RRB PO prelims)”

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