Quantitative Aptitude: Number Series Set 20 (based on SBI PO prelims)

Number Series Based on SBI PO Prelims

These questions are based on Number Series asked in SBI PO Prelims-Day 1 – Shift 1. Practice them as questions based on similar logic may be asked in the next coming shifts. 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) 14, 8, 9, 14.5 , 30, ?
A) 72
B) 74
C) 76
D) 78
E) 80

View Answer
  Option C
Explanation
: *0.5 +1, *1+1, *1.5+1, *2+1, *2.5+1

2) 77, 85, 69, 101, 37, ?
A) 101
B) -91
C) 145
D) 165
E) 170

View Answer
  Option D
Explanation
: +8, -16, +32,-64,+128

3) 7, 8, 18, 57, ? , 1165
A) 232
B) 142
C) 352
D) 432
E) 272

View Answer
  Option A
Explanation
: *1+1, *2+2, *3+3, *4+4,*5+5
57*4+4=232

4) 5, 7, 18, 47, 103, ?
A) 205
B) 215
C) 175
D) 195
E) 185

View Answer
  Option D
Explanation
: Difference of Difference
5,,,,,, 7,,,,,,,,,, 18,,,,,,,,,, 47,,,,,,,,, 103,,,,,,,,, ?
,,,,2,,,,,,,,11,,,,,,,,,,29,,,,,,,,,,56,,,,,,,,,,,(92)
,,,,,,,,,,9,,,,,,,,,,18,,,,,,,,,27,,,,,,,,,,(36)
The numbers in bracket are obtained by calculation
?=92+103=195

5) 20, 29, 54, 103, 184, ?
A) 235
B) 278
C) 315
D) 305
E) 333

View Answer
  Option D
Explanation
: +32, +52, +72, +92, +112

6) 18,9.5, 10.5, 17.25, 36.5, ?
A) 76.50
B) 86.25
C) 93.75
D) 84.25
E) 78.50

View Answer
  Option C
Explanation
: *0.5 + 0.5, *1+1, *1.5+1.5, *2+2, *2.5 +2.5

7) 101, 108, 94, 122, 66, ?
A) 156
B) 128
C) 188
D) 178
E) 180

View Answer
  Option D
Explanation
: +7, -14, +28, -56, +112

8) 15, 16, 34, 105, ? ., 2125
A) 414
B) 424
C) 434
D) 444
E) 454

View Answer
  Option B
Explanation
: *1+1, *2+2, *3+3, *4+4, *5+5

9) 11, 14, 25, 52, 103, ?
A) 167
B) 156
C) 186
D) 174
E) 170

View Answer
  Option C
Explanation
: Difference of difference
11,,,,,,,,,,, 14,,,,,,,,,,, 25,,,,,,,,,,, 52,,,,,,,,,,, 103,,,,,,,,,,, ?
,,,,,,,,3,,,,,,,,,,,,,,11,,,,,,,,,,27,,,,,,,,,,,,51,,,,,,,,,,,,,,,83
,,,,,,,,,,,,,,,,8,,,,,,,,,,,,,16,,,,,,,,,,,,24,,,,,,,,,,,,,,,32
 

10) 10, 14, 30, 66, 130, ?
A) 210
B) 220
C) 230
D) 240
E) 250

View Answer
  Option C
Explanation
: +22, +42, +62, +102, +102

 

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