What should come in the place of question mark '?' in the following number series? 9, 19, 59, 239, ?

What should come in the place of question mark '?' in the following number series? 9, 19, 59, 239, ? Correct Answer 1199

Solution:

Calculation:

The pattern for the given series is as follows:

9 × 2 + 1 = 19

19 × 3 + 2 = 59

59 × 4 + 3 = 239

239 × 5 + 4 = 1,199

∴ The next term in the given series is 1199.

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