# Quantitative Aptitude: Number Series Set 139

1. 14 , ? , 13 , 17.5 , 21.75
12
11.50
11.25
12.35
None of these
Option A
14 / 2 + 5 =12
12 / 2 + 7 =13
13 / 2 + 11 = 17.5

2. 15 , 5 , 4.5 , 5.8 , 7.9 , ?
11.25
11.50
10.74
12.60
None of these
Option C
15*0.2+2=5
5*0.3+3=4.5
4.5*0.4+4=5.8

3. 29 , ? , 79 , 131 , 201
55
45
35
40
None of these
Option B
29+(18*1-2)=45
45+(18*2-2)=79
79+(18*3-2)=131

4. ? , 6 , 10.5 , 23 , 60
5
6.5
8
10
None of these
Option A
9*0.5+0.5=5
5*1+1=6
6*1.5+1.5=10.5

5. 1256 , 318 , ? , 163 , 328 , 86
620
640
638
650
None of these
Option C

6. 12 , 13 , 28 , 85 , ? , 1711
345
405
415
342
None of these
Option D
12*1-1+2=13
13*2-2+4=28
28*3-1+2=85

7. 3 , 5 , 10 , ? , 92 , 349
25
27
24
30
None of these
Option B
3+1^2+1=5
5+2^2+1=10

8. 3 , ? , 13 , 39 , 87 , 169
2
4
5
9
None of these
Option C

9. 3 , 2 , 14 , 35 , 107 , ?
250
240
222
255
None of these
Option C
3+1^3-2=2
2+2^2+4=14
14+3^3-6=35

10. 4 , 6 , 6 , 8 , 112 , ?
570
584
580
590
None of these
Option A

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