Coefficient of `x^7` in `(1 + x)^10 + x(1 + x)^9 + x^2 (1 + x)^8+………..+x^10` is

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

Coefficient of x^(8) in (1+x)^(10) + x(1+x)^(9) + x^(2)(1+x)^(8) + ………….x^(9)(1+x) + x^(10) is

Find the coefficient of x^4 in (1 + x + x^2)^10

Find the coefficient of x^4 in (1 + x + x^2)^10

coefficient of x^(10) in (1+2x^(4))(1-x)^(8) is:

Prove that the ratio of the coefficient of x^10 in (1 - x^2)^10 & the term independent of x in (x-2/x)^10 is 1:32

Prove that the ratio of the coefficient of x^10 in (1 - x^2)^10 & the term independent of x in (x-2/x)^10 is 1:32

Findthe coefficient of x^2 in (x+1/x)^10.(1-x+2x^2)