coefficient of `x^(29)` in `(x - 1/(1.3))(x- 2/(1.3.5))(x-3/(1.3.5.7))....(x-30/(1.3.5...61))` is

the coefficient of x^(3) in (1+5x)^((1)/(2)) is:

coefficient of x^(5) in (1+x+x^(2)+x^(3))^(10) is

The coefficient of x^(5) in (1-x-x^(2)+x^(3))^(6) is

Coefficient of x^(29) in the polynomial (x-(1)/(1xx3))(x-(2)/(1xx3xx5))(x-(3)/(1xx3xx5xx7))cdots(x-(30)/(1xx3xx...xx61))

Coefficient of x^5 in (1+x +x^2 +x^3)^10 is

Coefficient of x^5 in (1+x +x^2 +x^3)^10 is