Question

What should come in place of the question mark '?' in the following number series?

25, ?, 150, 750, 5250, 57750

1. 25
2. 35
3. 40
4. 50
5. 65

Answer 1

Correct Answer - Option 4 : 50

Calculation:

Multiplying each term with continuous prime numbers to get the next term

The number series follows the pattern:

25

25 × 2 = 50

50 × 3 = 150

150 × 5 = 750

750 × 7 = 5250

5250 × 11 = 57750

∴ The value of '?' is 50