A) Positive
B) Negative
C) Zero
D) Cannot be determined
Correct Answer: D
Solution :
\[S=1+{{i}^{2}}+{{i}^{4}}+.....+{{i}^{2n}}=1-1+1-1+......+{{(-1)}^{n}}\] Obviously it depends on\[n\]. Hence cannot be determined unless \[n\] is known.
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