What should come in place of question mark (?) in the following number series?
1 9 25 49 81 ? 169
Correct Answer: Option D
The pattern of the given series is,
→ 1 = 12,
→ 9 = 32,
→ 25 = 52,
→ 49 = 72,
→ 81 = 92,
∵ we can that it is series of square of odd numbers ,
∴ ? = 112,
So, ? = 121
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