# find the value of :1+ i2+i4+ i6+i8 ...+i20.

https://www.meritnation.com/ask-answer/question/evaluate-1-i2-i4-i6-i2n/complex-numbers-and-quadratic-equations/10458651

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https://www.meritnation.com/ask-answer/question/evaluate-1-i2-i4-i6-i2n/complex-numbers-and-quadratic-equations/10458651

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