# Quantitative Aptitude: Number Series Set 148

Directions: What will come in place of questions mark(?) in the following number series ?

1. 24, 8, 16, 12, 14,?
7
13
28
11
10
Option B
The series is,24+8/2, 8+16/2, 16+12/2, 12+14/2 =13…

2. 36, 18, ? 27, 54, 135
18
12
72
14
9
Option A
The series is, (*.5), (*1), (*1.5)…

3. 15, 32, 99, 400, 2005, ?
12048
12036
14080
10025
12030
Option B
The series is, (+1*2), (+1*3), (+1*4)…

4. 64, 32, 96, 24, 120, ?
30
20
60
40
15
Option B
The series is, (Ã·2), (*3), (Ã·4), (*5)…

5. 3, 7, 13, 23, 41, ?
72
78
85
75
90
Option D
The series is difference of difference.

6. 327, 336, 343, 348, 351, 350
336
350
327
348
343
Option
The series is, (+9), (+7), (+5), (+3)…

7. 520, 527, 541, 562, 625, 737
562
527
541
625
737
Option
The series is, (+7), (+14), (+28), (+56)…

8. 6, 4, 5, 8.5, 20, 46
8.5
20
5
4
6
Option B
The series is, (5*1), (*1+1), (*1.5+1), (*2+1), (*2.5+1)…

9. 33, 38, 45, 63, 83, 108
38
63
83
33
45
Option E
The series is, (+5), (+10), (+15)…

10. 105, 107, 110, 115, 122, 131
122
131
110
115
107
Option B
The series is, (+2), (+3), (+5) addition of prime numbers.

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