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In the expansion of (1+x)^n  the sum of coefficients of odd powers of x is

Option: 1

2^n+1


Option: 2

n \cdot 2^n


Option: 3

2^n


Option: 4

2^{n-1}


Answers (1)

best_answer

Sum of the coefficient of odd powers of x

=C_1+C_3+C_5+\ldots .=2^{n-1}

Posted by

shivangi.bhatnagar

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