Instructions

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

Question 134

17 18 26 53 117 ? 458

Solution

Here, each sucessive nth term is 'previous term + (n-1)³'

We are supposed to find 6th term.

Hence, 6th term = 117 + (6-1)^3 = 117 + 125 = 242

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