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If I(n)=int(0)^(1)(1+x+x^(2)+....+x^(n-1...

If `I_(n)=int_(0)^(1)(1+x+x^(2)+....+x^(n-1))(1+3x+5x^(2)+....+(2n-3)x^(n-2)+(2n-1)x^(n-1))dx,n in N,` then the value of `sqrt(I_(9))` is (a) 3 (b) 6 (c) 9 (d) 12

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The correct Answer is:
9
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