Find the sum of the last 30 coefficients in the expansion of `(1+x)^(59)`,
when expanded in ascending powers of x.

The sum of the coefficients in the expansion of (1+2x-x^2)^(20) is

Find the coefficient of x^4 in the expansion of (1-x^2)^n

Sum of coeffiecient of the last 6 terms in the expansion of (1+x)^(11) when the expansion is in ascending powers of x, is a)1024 b)32 c)512 d)64

The coefficient of x^(5) in the expansion of (x+3)^(8) is

Find the coefficient of x^4 in the expansion of (1+x)^n(1-x)^n

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

What is the coefficient of x^(n-2) in the expansion of (1+x)^(2n) ?

The coefficient of x^(4) in the expansion of (1 - 2x)^(5) is equal to