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

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

Coefficient of x^(11) in the expansion of (1+x^(2))^(4)(1+x^(3))^(7)(1+x^(4))^(12) is 1051b.1106 c.1113d.1120

Cofficient of x^(12) in the expansion of (1+x^(2))^50(x+1/x)^(-10)

Cofficient of x^(12) in the expansion of (1+x^(2))^50(x+1/x)^(-10)

Cofficient of x^(4) in the expansion of (1-3x+x^(2))/(e^(x)) is

Cofficient of x^(4) in the expansion of (1-3x+x^(2))/(e^(x)) is

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

The cofficient of x^(4) in the expansion of (1+x+x^(2)+x^(3))^(n) is

Coefficient of x^(11) in the expansion of (1+x^2)^4(1+x^3)^7(1+x^4)^(12) is 1051 b. 1106 c. 1113 d. 1120