What should come in place of the question mark 39 39 in the following number series 11 19 35 59 131 ...........

Quantitative Aptitude(IBPS CL) Number series

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

11, 19, 35, 59, ?, 131

This questions was previously asked in

IBPS Clerk Prelims

103

To find the missing number in the series, let's examine the pattern:

- Start with the sequence: 11, 19, 35, 59, ?, 131.

- Calculate differences between consecutive numbers:

- 19 - 11 = 8

- 35 - 19 = 16

- 59 - 35 = 24

- Notice the differences increase by 8 each time.

- Extend the pattern:

- Next difference should be 24 + 8 = 32.

- Calculate the next number:

- 59 + 32 = 91.

- Therefore, the number that should replace the question mark is 91.

Option 2: 91

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