Let the coefficients of powers of x in the 2nd ,3rd and 4th terms in the expansion of `(1+x)^(n)` ,where n is a positive integer ,be in arithmetic progression .Then the sum of the cofficients of odd powers of x in the expansion is-

Let the coefficients of powers of x in the 2^(nd), 3^(rd) and 4^(th) terms in the expansion of (1+x)^n , where n is a positive integer, be in arithmetic progression. Then the sum of the coefficients of odd powers of x in the expansion is

Let the coefficients of powers of in the 2^(nd), 3^(rd) and 4^(th) terms in the expansion of (1+x)^(n) , where n is a positive integer, be in arithmetic progression. The sum of the coefficients of odd powers of x in the expansion is

Let the coefficients of powers of x in the 2^(nd), 3^(rd) and 4^(th) terms in the expansion of (1 + x)^(n) , where n is a positive integer, be in arithmetic progression. Then the sum of the coefficients of odd powers of x in the expansion is

If the coefficient of the 2^(nd) , 3^(rd) and 4^(th) terms in the expansion of (1 + x)^(n) are in A.P, then n=

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

The sum of coefficients of odd powers of x in the expansion of (1+x-x^2-x^3)^6 is

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