If the sum of coefficient of first half terms in the expansion of `(x+y)^ni s256` , then find the greatest coefficient in the expansion.

if the sum of coefficients in the expansion of (x-2y+3z)^n is 128, then find the greatest coefficients in the expansion of (1+x)^ndot

If the coefficient of 4th term in the expansion of (a+b)^n is 56, then n is

The coefficient of the middle term in the expansion of (x + 2y)^(6) is

If the sum of the coefficients in the expansion of (a + b)^(n) is 4096, then the greatest coefficient in the expansion is

If the sum of the coefficients of the first, second, and third terms of the expansion of (x^2+1/x)^m i s46 , then find the coefficient of the term that does not contain xdot

If the sum of the coefficients in the expansion of (1 -3x + 10x^2)^(n) is a and the sum of the coefficients in the expansion of (1 - x^(2))^(n) is b , then

Find the middle terms in the expansion of (x+y)^(7) .

Find the coefficient of x^6 y^3 in the expansion of (x+2y)^9 .