Find the co-efficient of `x^(15)" in "(x^(2)+1/x^(3))^(10)`

Find the Co-efficient of x^(6) and the co-efficient of x^(2)" in "(x^(2)-1/x^(3))^(6)

Find the Co-efficient of x^(4) in the expansion of (1+x^(3))^(50)(x^(2)+1/x)^(5) .

Find the co-efficient of x^(4) in the expansion of (3-4x+x^(2))/e^(2x) .

If the co-efficient of x in (x^(2)+lamda/x)^(5) is 270, then lamda =

Find the coefficient of x^7 in the expansion of (1+3x-2x^3)^(10)dot

If A and B are co efficients of x^(n) in the expasion of (1+x)^(2n)and(1+x)^(2n-1) respectively then (A)/(B) …………..