# Quantitative Aptitude: Number Series Set 57 (for Clerk Prelims)

Directions: The following series are based on a certain pattern. Find the number represented by question mark (?) in the following series:

1. 267, 244, 219, 190, ?, 100
A) 135

B) 127
C) 157
D) 162
E) 153
Â  Option E
Pattern
:
…..-23 …..-25……-29…..-37………-53
………….2………..4……..8………16
2. 265, 264, 272, 245, 309, ?
A) 149

B) 157
C) 165
D) 184
E) 122
Â  Option D
Pattern
:
-13, +23, -33, +43, -53
3. 0.5, 2, 7, 29, 146, ?
A) 877

B) 665
C) 787
D) 611
E) 786
Â  Option A
Pattern
:
*2 + 1, *3 + 1, *4 + 1, *5 + 1
4. 0.5, 2, 5, 12.5, 34.25, ?
A) 113.25

B) 124.25
C) 106.25
D) 122.25
E) 102.25
Â  Option C
Pattern
:
*1 + 1.5, *1.5 + 2, *2 + 2.5, *2.5 + 3, *3 + 3.5
5. 512, ?, 256, 64, 8, 0.5
A) 348

B) 512
C) 420
D) 558
E) 396
Â  Option B
Pattern
:
*1, *2, *4, *8, *16
6. 57, 82, 62, 77, 67, ?
A) 79

B) 84
C) 62
D) 72
E) 69
Â  Option D
Pattern
:
â€¦.+25â€¦â€¦.-20â€¦â€¦.+15â€¦â€¦..-10â€¦â€¦â€¦+5
7. 3.5, 5, 12, 44, ?, 1284
A) 215

B) 127
C) 263
D) 338
E) 325
Â  Option A
Pattern
:
*2 – 2, *3 – 3, *4 – 4, *5 – 5, *6 – 6
8. 11, 4.5, 3, 2.5, 2.5, ?
A) 1.25

B) 3.25
C) 2.75
D) 3.5
E) 1.75
Â  Option B
Pattern
:
*0.5 â€“ 1, *1 â€“ 1.5, *1.5 -2, *2 â€“ 2.5, *2.5 â€“ 3
9. 13, 18, 25, 36, ?, 78
A) 61

B) 78
C) 64
D) 49
E) 53
Â  Option E
Pattern
:
…..+5……….+7…………+11……….+17………….+25
………….+2………..+4…………+6………….+8
10. 486, 384, 299, 231, 180, ?
A) 146

B) 122
C) 132
D) 157
E) 139
Â  Option A
Pattern
:
-102……-85……..-68……….-51……….-34

## One Thought to “Quantitative Aptitude: Number Series Set 57 (for Clerk Prelims)”

1. the walking dead

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