IBPS RRB Office Assistant Prelims Exam – Memory Based Number Series
Dear Friends,
Here we are with the memory based questions based on number series which were asked in today’s IBPS RRB Office Assistant Exam.
1). 7, 7, 10, 18, ? 57
Logic: Difference of Difference: 3, 5, 7
Answer: 33
2). 7, 8, 16, 43, 107, ?
Logic: Difference of 13, 23, 33, 43, 53
Answer: 232
3).98, 111, 85, 137, ? 241
Logic: Difference of: +13, -26, +52, -104, +208
Answer: 33
4).6, 5, 8, 21, 80, ?
Logic: 6×1-1, 5×2-2, 8×3-3, 21×4-4, 80×5-5
Answer: 395
5).10, 4, 3, 3.5, 6 ,?
Logic: 10×0.5-1, 4×1-1, 3×1.5+1, 3.5×2-1, 6×2.5-1
Answer: 14
6). 6,8,13,23,?,66
Logic: Difference of Difference 3, 5, 7
Answer: 40
7). 7,8,18,57,232,?
Logic: *1+1 ,*2+ 2, *3+3
Answer: 1165
8). 8,5,6,10,21,?
Logic:*0.5 +1, *1+1, *1.5 +1
Answer: 53.5
9). 4,18,46,102,?,438
Logic: difference 14,28,56
Answer: 214
10). 109,110,102,129,65,?
Logic: Difference of +13, -23, +33, -43, +53
Answer: 190
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