In the expansion of `(3+x/2)^(n)` the coefficients of `x^(7) and x^(8)` are equal, then the value of `n` is equal to

In the expansion of (2+1/(3x))^(n) , the cofficient of x^(-7) and x^(-8) are equal to

Consider the expansion of (1 + x)^(2n+1) If the coefficients of x^(r) and x^(r+1) are equal in the expansion, then r is equal to

In the expansion of (ax+b)^(2020) , if the coefficient of x^(2) and x^(3) are equal, then the value of (9)/(100)((b)/(a)) is equal to

In the expansion of (ax+b)^(2020) , if the coefficient of x^(2) and x^(3) are equal, then the value of (9)/(100)((b)/(a)) is equal to

If the coefficient of x^7 and x^8 in (2+x//3)^n are equal then n=

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

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