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Let a(n)=i^((n+1)^(2)) where i=sqrt(-1)...

Let `a_(n)=i^((n+1)^(2))` where `i=sqrt(-1)andn=1,2,3,....` Then the value of `a_(1)+a_(3)+a_(5)+.....+a_(25)` is a)13 b)13+i c)13-i d)12

A

13

B

13+i

C

13-i

D

12

Text Solution

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The correct Answer is:
A
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