Instructions

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

Question 99

12, 16, 32, 68, ?

Solution

The difference between consecutive terms of the series are perfect squares of even natural numbers.

For example, 16 - 12 = 4
32 - 16 = 16
68 - 32 = 36

Hence, the next number will be 68 + 64 = 132

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