Question

In the following number series, a wrong number is given. Find out the wrong number.

23, 24, 48, 153, 616, 3085

1. 23
2. 24
3. 48
4. 153
5. 616

Answer 1

Correct Answer - Option 3 : 48

Given:

23, 24, 48, 153, 616, 3085

Calculation:

23 × 1 + 1 = 23 + 1 = 24

24 × 2 + 2 = 48 + 2 = 50 ≠ 48

50 × 3 + 3 = 150 + 3 = 153

153 × 4 + 4 = 612 + 4 = 616

616 × 5 + 5 = 3085 + 5 = 3085

There should be 50 instead of 48.

∴ 48 is the wrong term.