The A.M of the coefficient of the expansion `(1+x)^(30)` is

If the sum of the coefficients in the expansion of (1+2x)^(n) is 6561 ,then the greatest coefficient in the expansion is

The coefficient of x^(4) in the expansion of (1-x)^(-2) is

The coefficient of x^(r) in the expansion of (1-x)^(-2) is

The coefficient of x^(7) in the expansion of (1+x)^(9) is

If the sum of the coefficients in the expansion of (x +y)^(n) is 2048, then the greatest coefficient in the expansion is:

What is the sum of the coefficients in the expansion of (1+x)^(n) ?

If sum of the coefficients in the expansion of (1+3x)^(n) is 4096, find n and the greatest coefficient in the expansion.