" If the coefficients of "x^(7)&x^(8)" in the expansion of "[2+(x)/(3)]^(n)" are equal,then the value of "n" is "

If the coefficients of x^(7) and x^(8) in the expansion of [2+(x)/(3)]^(n) are equal,then the value of n is :(A)15(B)45(C)55(D)56

If the coefficients of x^(7) and x^(8) in the expansion of (2+x/3)^(n) are equal then n is

If the coefficients of x^7 and x^8 in the expansion of [2 +x/3]^n are equal, then the value of n is : (A) 15 (B) 45 (C) 55 (D) 56

The coefficient of x^(n) in the expansion of e^(2x+3) is

if the coefficients of x^7 & x^8 in the expansion (2+x/3)^n are equal then n is equal to

Coefficient of x^n in the expansion of (a+x)^(2n)

Find the coefficients of x^(-2) in the expansion of (3x-(7)/(x))^(8)

The coefficient of x^(n) in the expansion of (2+3x)(e^(-3x)) is

What is the coefficient of x^(n-2) in the expansion of (1+x)^(2n) ?