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Which number will replace the question mark (?) in the following series?5, 25, 7, 49, 9, 81, 11, ?
Question

Which number will replace the question mark (?) in the following series?

5, 25, 7, 49, 9, 81, 11, ?

A.

324

B.

625

C.

196

D.

121

Correct option is D

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