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If (1+i) (1+2i) (1+3i) ,…(1+ni) =a+ib th...

If `(1+i) (1+2i) (1+3i) ,…(1+ni) =a+ib` then the value of `2xx5 xx10xx…xx(1+ n^(2))` is-

A

`sqrt(a^(2)+b^(2))`

B

`sqrt(a^(2) -b^(2))`

C

`a^(2) -b^(2)`

D

`a^(2) +b^(2)`

Text Solution

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The correct Answer is:
D
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