# Memory Based Questions (1st Slot) IBPS RRB Officer (Scale-1) Prelims 16th Sep 2017

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,Â  Â 94,Â Â  Â 46,Â Â  22,Â Â Â  ??

Solution:

190 â€“ 96 = 94

94 â€“ (96/2 = 48) = 46

46 â€“ (48/2 = 24) = 22

22 â€“ (24/2 – 12) = 10

2). 7,Â Â  Â 4,Â Â  Â 5,Â  Â 12,Â Â  52,Â Â  Â ??

Solution:

7 Ã—0.5+0.5 = 4

4 Ã—1+1 = 5

5 Ã—2+2 = 12

12 Ã—4+4 = 52

52 Ã—8+8 = 424

3). 6,Â Â  Â 4,Â Â  5,Â Â  Â 11,Â Â  45,Â Â  Â ??

Solution:

6 Ã—0.5+1 = 4

4 Ã—1+1 = 5

5 Ã—2+1 = 11

11 Ã—4+1 = 45

45 Ã—8+1 = 361

4).89,Â Â  Â 88,Â  Â 85,Â  Â 78,Â  63,Â Â  Â ??

Difference of difference

1â€¦â€¦â€¦â€¦3â€¦â€¦â€¦..7â€¦â€¦â€¦..15â€¦â€¦â€¦â€¦31

â€¦â€¦2â€¦â€¦â€¦â€¦.4â€¦â€¦â€¦â€¦8â€¦â€¦â€¦..16â€¦â€¦.

5). 5,Â Â  Â 28,Â Â  Â 47,Â Â  Â 64,Â Â  77,Â  Â ??

Difference of difference

23â€¦â€¦â€¦â€¦19â€¦â€¦â€¦..17â€¦â€¦â€¦..13â€¦â€¦â€¦â€¦11

â€¦â€¦4â€¦â€¦â€¦â€¦.2â€¦â€¦â€¦â€¦4â€¦â€¦â€¦..2â€¦â€¦.