In the expansion of `(1+x+x^2+x^3+x^4)^-2,` coefficient of `x^10` is

In the expansion of (1-2x+3x^2 -4x^3+…."to")^4 coefficient of x^2 is

In the expansion of (1-2x+3x^2 -4x^3+…."to")^4 coefficient of x^2 is

Find the coefficient of x^7 in the expansion of (1+2x + 3x^2 + 4x^3 + 5x^4 + 6x^5 + 7x^6 + 8x^7)^10

Find the coefficient of x^4 in the expansion of (1+x+x^2 +x^3 )^11 x^4 in the expansion of (2-x+ 3 x^2)^6

Coefficient of x^11 in the expansion of (1+x^2)^4(1+x^3)^7(1+x^4)^12 is

The coefficients of x^(13) in the expansion of (1 - x)^(5) (1 + x + x^(2) + x^(3) )^(4) , is

The coefficients of x^(13) in the expansion of (1 - x)^(5) (1 + x + x^(2) + x^(3) )^(4) , is