Let `aa n db` be the coefficients of `x^3` in `(1+x+2x^2+3x^2)^4a n d(1+x+2x^2+3x^3+4x^4)^4,` then respectively. Then the value of `4a//b` is.

Let aa n db be the coefficients of x^3 in (1+x+2x^2+3x^3)^4a n d(1+x+2x^2+3x^3+4x^4)^4, then respectively. Then the value of 4a//b is.

Let aa n db be the coefficients of x^3 in (1+x+2x^2+3x^3)^4a n d(1+x+2x^2+3x^3+4x^4)^4, then respectively. Then the value of 4a//b is.

Let a and b be the coefficients of x^3 in (1+x+2x^2+3x^3)^4a n d(1+x+2x^2+3x^3+4x^4)^4, then respectively. Then the value of 4a//b is.

Let a and b be the coefficients of x^(3) in (1+x+2x^(2)+3x^(2))^(4) and (1+x+2x^(2)+3x^(3)+4x^(4))^(4) then respectively.Then the value of 4a/b is.

The coefficients of x^3 in ((1-4x)^2 (1-2x^2)^(1//2))/((4-x)^(3//2)) is

Find the coefficient of x^n in the expansion of (1+ 2x + 3x^2 + 4x^3 + …..)^2