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

  1. 0.0075, 92
  2. 10, 13
  3. 0.008, 36
  4. 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


9192939795102
  1. 109
  2. 102
  3. 97
  4. 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:

6848384
  1. 768
  2. 1536
  3. 3072
  4. 18432

Correct answer: 4. 18432

Each number is the product of two previous numbers.

6 * 8 = 48

8 * 48 = 384

48 * 384 = 18432


185490126_______
  1. 150
  2. 166
  3. 162
  4. 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


251255001500_______
  1. 3000
  2. 4500
  3. 6000
  4. 7500

Correct answer: 1.

25 * 5 = 125

125 * 4 = 500

500 * 3 = 1500

1500 * 2 = 3000