Quantitative Aptitude: Number Series Set 21 (based on SBI PO prelims)

Suraj

Quants Number Series Asked in SBI PO prelims 2017

These questions are based on Number Series asked in SBI PO Prelims-Day 2 – Shift 1. Practice them as questions based on similar logic may be asked in the next coming shifts. Quants Number Series Asked in SBI PO prelims 2017

Click here to download the SBI PO Prelims 2017: Memory Based Paper – English with Solutions

Click here to download the SBI PO Prelims 2017: Memory Based Paper – Reasoning with Solutions

Click here to download the SBI PO Prelims 2017: Memory Based Paper – Quant with Solutions

Directions: What will come in place of (?) in following series following a certain pattern?

1) 9, 8, 14, 39, ? , 755
A) 123
B) 143
C) 142
D) 153
E) 152

View Answer
  Option E
Explanation: *1 -1, *2-2, *3-3, *4-4,*5-5

2) 25, 32, 21, 34, 17, ?
A) 33
B) 34
C) 35
D) 36
E) 37

View Answer
  Option D
Explanation:
25,,,,,,,,,,,,, 32,,,,,,,,,,, 21,,,,,,,,,, 34,,,,,,,,,, 17,,,,,,,,,,, ?
,,,,,,,,,+7,,,,,,,,,,,-11,,,,,,,,,+13,,,,,,,-17,,,,,,,(+19)
,,,,,,,,,,,,,,,,,,4,,,,,,,,,,,,,2,,,,,,,,,,,,4,,,,,,,,,,,,,(2)
required number=17+19=36
 

3) 11, 6, 7, 12, ? , 67.5
A) 25
B) 26
C) 28
D) 27
E) 24

View Answer
  Option B
Explanation: *0.5 + 0.5,*1+1,*1.5+1.5

4) 4, 7, 35, 83, 146, ?
A) 189
B) 213
C) 219
D) 223
E) 267

View Answer
  Option C
Explanation: Difference of Difference
4,,,,,,,,,, 7,,,,,,,,,, 35,,,,,,,,,,,, 83,,,,,,,,,, 146,,,,,,,,,,, ?
,,,,,,3,,,,,,,,28,,,,,,,,,,,,,,48,,,,,,,,,,,,63,,,,,,,,,,,,,(73)
,,,,,,,,,,25,,,,,,,,,,,20,,,,,,,,,,,,,,15,,,,,,,,,,(10)
required number=73+146=219

5) 521, 496, 447, ?, 245
A) 345
B) 351
C) 312
D) 366
E) 356

View Answer
  Option D
Explanation: -52, -72, -92, -112

6) 8, 15, 44, 175, 874, ?
A) 4571
B) 4574
C) 4478
D) 5187
E) 5243

View Answer
  Option E
Explanation: *2-1, *3-1, *4-1, *5-1, *6-1

7) 29, 36, 25, 40, 21, ?
A) 41
B) -2
C) 43
D) 44
E) 49

View Answer
  Option D
Explanation: +7,-11,+15,-19,+23

8) 11, 15, 29, 58, 107, ?
A) 147
B) 156
C) 170
D) 181
E) 119

View Answer
  Option D
Explanation:
11,,,,,,,, 15,,,,,,,,,, 29,,,,,,,,,, 58,,,,,,,,,,, 107,,,,,,,,,,,, (181)
,,,,,,,4,,,,,,,,,,,14,,,,,,,,,,,29,,,,,,,,,,49,,,,,,,,,,,,,,,(74)
,,,,,,,,,,,,10,,,,,,,,,,,15,,,,,,,,,,20,,,,,,,,,,,,,,(25)

9) 13, 7, 8, 13.5, ?, 75
A) 26
B) 27
C) 28
D) 29
E) 30

View Answer
  Option D
Explanation: *0.5+0.5, *1+1,*1.5 +1.5

10) 671, 663, 636, 572, 447, ?
A) 261
B) 216
C) 231
D) 312
E) 311

View Answer
  Option C
Explanation:
-23, -33, -43, -53, -63

 

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