In the expansion of `(1+x)^n`, Then sum of the coefficients of odd power of x is

In the expansion of (1+x)^(30) the sum of the coefficients of odd powers of x is

In the expansion of (1+x)^30 the sum of the coefficients of odd powers of x is

In the expansion of (1+x)^(50) , the sum of the coefficients of odd powers of x is :

In the expansion of (1+x)^50 the sum of the coefficients of odd power of x is (A) 0 (B) 2^50 (C) 2^49 (D) 2^51

In the expansion of (1 + x)^n , the sum of coefficient of odd power of x is...