Question 48

Select the number that can replace the question mark (?) in the following series.

2, 3, 6, 15, ?, 157.5, 630

Solution

Given series is 2, 3, 6, 15, ?, 157.5, 630

The logic here is

2 x 1.5 = 3

3 x 2 = 6

6 x 2.5 = 15

Similarly, the next number = 15 x 3 = 45

45 x 3.5 = 157.5

157.5 x 4 = 630

$$\therefore\ $$The required number = 45

Hence, the correct answer is Option D

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