# Aptitude Questions – Number Series Set 66

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Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series based on latest pattern, which is common for SBI,IBPS, RBI,LIC, NICL and other  competitive exams.

1. 4, 4, 6, 12, 30, ?
1. 97
2. 92
3. 95
4. 98
5. 90
Explanation :
4 * 1 = 4
4 * 1.5 = 6
6 * 2 = 12
12 * 2.5 = 30
30 * 3 = 90

2. 10 5 5 10 40 ?
1.350
2.320
3.360
4.370
5.380
Explanation :
10 * 0.5 = 5
5 * 1 = 5
5 * 2 = 10
10 * 4 = 40
40 * 8 = 320

3. 3, 5, ?, 27, 92, 349
1.12
2.18
3.15
4.10
5.11
Explanation :
3 + 1² + 1 = 5
5 + 2² + 1= 10
10 + 4² + 1= 27

4. 1, 2, 6, 17, ?, 157.5
1.40.5
2.42.5
3.49.5
4.51.5
5.50.5
Explanation :
1 * 1 + 1 = 2
2* 1.5 + 3 = 6
6 * 2 + 5 = 17
17 * 2.5 + 7 = 49.5
49.5 * 3 + 9 =157.5

5. 7, ?, 19, 45, 95, 177
1.8
2.5
3.6
4.7
5.9
Explanation :
7 + 1² + 1= 9
9 + 3² + 1= 19
19 + 5² + 1= 45……..

6. 9, 8, 15, ?, 175, 874
1.42
2.24
3.38
4.44
5.14
Explanation :
9*1 – 1 = 8
8*2 – 1 = 15
15*3 – 1 = 44

7. 2, 2, 12, 36, 104, ?
1.232
2.221
3.223
4.224
5.242
Explanation :
2 + 1³ – 1 = 2
2 + 2³ + 2 = 12
12 + 3³ – 3 = 36
36 + 4³ + 4 = 104

8. 4, 15, 63, 247, 995, ?
1.3975
2.3973
3.3965
4.3971
5.3955
Explanation :
4 * 4 – 1 = 15
15 * 4 + 3 = 63
63 * 4 – 5 = 247
247 * 4 + 7 = 995
995 * 4 – 9 = 3971

9. 3, ?, 7, 9, 11, 13
1.6
2.5
3.7
4.8
5.9
Explanation :
3*2 – 1 = 5
5*2 – 3 = 7
7*2 – 5 = 9

10. 6, 8, 12, 42, 160, ?
1.870
2.840
3.850
4.810
5.820