1, 4, 9, 16, 20, 36, 49?

The pattern is 12, 22, 32, 42, 52, 62, 72 . But, instead of 52, It is 20, which is to be turned out.

Correct Answer: 20

Explanation:

The pattern is 1², 2², 3², 4², 5², 6², 7² .
But, instead of 5², It is 20, which is to be turned out.

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