Memory Based Questions (1st Slot) IBPS RRB Officer (Scale-1) Prelims Held on 16th Sep 2017:
Dear Readers, IBPS RRB Officer (Scale-1) Prelims Held on 16th Sep 2017 (1st Slot) has finished; here we have given Memory based Number Series, Puzzles and more. Candidates those who are all going to write the examination can check this pattern and make use it.
Number Series Asked in (1st Slot) IBPS RRB Officer (Scale-1) Prelims Held on 16th Sep 2017:
1). 190,  94,   46,  22,   ??
Solution:
190 – 96 = 94
94 – (96/2 = 48) = 46
46 – (48/2 = 24) = 22
22 – (24/2 – 12) = 10
Answer = 10
2). 7,   4,   5,  12,  52,   ??
Solution:
7 ×0.5+0.5 = 4
4 ×1+1 = 5
5 ×2+2 = 12
12 ×4+4 = 52
52 ×8+8 = 424
Answer: 424
3). 6,   4,  5,   11,  45,   ??
Solution:
6 ×0.5+1 = 4
4 ×1+1 = 5
5 ×2+1 = 11
11 ×4+1 = 45
45 ×8+1 = 361
Answer: 361
4).89,   88,  85,  78, 63,   ??
Difference of difference
1…………3………..7………..15…………31
……2………….4…………8………..16…….
Answer: 32
5). 5,   28,   47,   64,  77,  ??
Difference of difference
23…………19………..17………..13…………11
……4………….2…………4………..2…….
Answer: 88
Full Set of Questions Asked IBPS RRB Officer (Scale-1) Prelims Exam Held on 9th Sep 2017
