In the expansion of `(x^3-1/(x^2))^n ,n in N` , if the sum of the coefficients of `x^5a n dx^(10)`is 0 , then `n` is a. 25 b. 20 c. 15 d. none of these

In the expansion of (x^3-1/(x^2))^n ,n in N , if the sum of the coefficients of x^5a n dx^(10) is zero , then n is a. 25 b. 20 c. 15 d. none of these

In the expansion of (x^(3)-(1)/(x^(2)))^(n),n in N if sum of the coefficients of x^(5) and x^(10) is 0 then n is

In the expansion of (x^3-1/x^2)^n, n in N if sum of the coefficients of x^5 and x^(10) is 0 then n is

In the expansion of (x^3-1/x^2)^n, n in N if sum of the coefficients of x^5 and x^(10) is 0 then n is

If the sum of the coefficients in the expansion of (1-3x+10x^(2))^(n) isa and if the sum of the coefficients in the expansion of (1+x^(2))^(n) isb, then a=3b b.a=b^(3) c.b=a^(3) d.none of these

In the expansion of [(1+x)//(1-x)]^2, the coefficient of x^n will be a. 4n b. 4n-3 c. 4n+1 d. none of these