Question

Which number will replace the question mark (?) in the following series?

11, 17, 28, 51, 96, 187, 368, ?

1. 792
2. 713
3. 731
4. 729

Answer 1

Correct Answer - Option 3 : 731

The given series: 11, 17, 28, 51, 96, 187, 368, ?
11 × 2 - 5 = 17
17 × 2 - 6 = 28
28 × 2 - 5 = 51
51 × 2 - 6 = 96
96 × 2 - 5 = 187
187 × 2 - 6 = 368
368 × 2 - 5 = 731

Hence, 731 will be the next term in the series.