In these types of questions, the numbers are arranged in a certain series. The solver has to observe the relationship between different numbers and find the missing number.
0.0025 0.005 5 ____ 0.8 1.6 _____ 26
- 0.0075, 92
- 10, 13
- 0.008, 36
- 52, 0.0095
Correct answer: 2.
The question has a series in which each number is double of the previous number.
0.0025 * 2 = 0.005
5 * 2 = 10
0.8 * 2 = 1.6
13 * 2 = 26
| 91 | 92 | 93 | 97 | 95 | 102 |
- 109
- 102
- 97
- 112
Correct answer: 3
Two series are there in question
91, 93, 95, 97 and so on …
92, 97, 102, 107, and so on
So the next number is 97
Find the next number:
| 6 | 8 | 48 | 384 |
- 768
- 1536
- 3072
- 18432
Correct answer: 4. 18432
Each number is the product of two previous numbers.
6 * 8 = 48
8 * 48 = 384
48 * 384 = 18432
| 18 | 54 | 90 | 126 | _______ |
- 150
- 166
- 162
- 178
Correct answer: 3. 162
18 is multiplied with odd numbers.
18 * 1 = 18
18 * 3 = 54
18 * 5 = 90
18 * 7 = 126
18 * 9 = 162
| 25 | 125 | 500 | 1500 | _______ |
- 3000
- 4500
- 6000
- 7500
Correct answer: 1.
25 * 5 = 125
125 * 4 = 500
500 * 3 = 1500
1500 * 2 = 3000