# Aptitude Questions – Number Series Set 57

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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. 5, 6, 14, 45, 184, ?
1.927
2.932
3.925
4.918
5.920
Explanation :
5 * 1 + 1 = 6
6 * 2 + 2 = 14
14 * 3 + 3 = 45
45 * 4 + 4 = 184
184 * 5 + 5 = 925

2. 8 4 4 6 12 ?
1.50
2.20
3.90
4.30
5.40
Explanation :
8 * 0.5 = 4
4 * 1 = 4
4 * 1.5 = 6
6 * 2 = 12
12 * 2.5 = 30

3. 16, 21, ?, 48, 74, 111
1.32
2.24
3.25
4.33
5.31
Explanation :
21 – 16 = 5
31 – 21 = 10
48 – 31 = 17
74 – 48 = 26; 10 – 5 = 5; 17 – 10 = 7; 26 – 17 = 9

4. 8, 9, 15, 32, ?, 250.5
1.70.5
2.82.5
3.68.5
4.71.5
5.80.5
8 * 1 + 1 = 9
9 * 1.5 + 1.5 = 15
15 * 2 + 2 = 32
32 * 2.5 + 2.5 = 82.5
82.5 * 3 + 3 = 250.5

5. 11, ?, 18, 35, 100, 357
1.13
2.15
3.16
4.17
5.12
Explanation :
11 + 1² + 1= 13
13 + 2² + 1= 18
18 + 4² + 1= 35……..

6. 8, 7, 12, ?, 128, 635
1.42
2.24
3.33
4.24
5.14
Explanation :
8*1 – 1 = 7
7*2 – 2 = 12
12*3 – 3 = 33

7. 3, 3, 12, 38, 103, ?
1.232
2.221
3.223
4.227
5.242
Explanation :
3 + 1³ – 1 = 3
3 + 2³ + 1 = 12
12 + 3³ – 1 = 38
38 + 4³ + 1 = 103

8. 2, 5, 18, 49, 154, ?
1.475
2.470
3.465
4.453
5.455
Explanation :
2 * 3 – 1 = 5
5 * 3 + 3 = 18
18 * 3 – 5 = 49
49 * 3 + 7 = 154
154 * 3 – 9 = 453

9. 11, ?, 33, 45, 59, 77
1.53
2.25
3.21
4.28
5.21
Explanation :
11*2 – 1 = 21
21*2 – 11 = 33
33*2 – 21 = 45

10. 18, 20, 36, 114, 448, ?
1.2370
2.2340
3.2250
4.2410
5.2520