in If the coefficient of `x^r` and `x^(r +1)` are equal in the expansion of `(1 + x)^(2n + 1)`, then find the value of `r.`

If the coefficient of x^(r)andx^(r+1) are equal in the expansion of (1+x)^(2n+1) , then find the value of r .

If the coefficient of r^(th) and (r+4)^(th) terms are equal in the expansion of (1+x)^(20) , then the value of r will be

If A and B are coefficients of x^r and x^(n-r) respectively in the expansion of (1 + x)^n , then

If A and B are coefficients of x^(r) and x^(n-r) respectively in the expansion of (1+x)^(n), then

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

If the coefficient of (3r)^(th) and (r + 2)^(th) terms in the expansion of (1 + x)^(2n) are equal then n =

If the coefficient of (3r)^(th) and (r + 2)^(th) terms in the expansion of (1 + x)^(2n) are equal then n =