In the binomial expansion of `(a - b)^(n)`, `n gt= 5`, the sum of `5^(th)` and `6^(th)` term `a/b` equals

In the binomial expansion of (a+b)^(n) , the coefficients of the 4^(th)and13^(th) terms are equal to each other, find n.

If in the expansion of (a-2b)^(n) , the sum of 5^(th) and 6^(th) terms is 0, then th e values of a//b =

If the constant term in the binomial expansion of (x^2-1/x)^n ,n in N is 15, then the value of n is equal to.

In the binomial coefficients of (1 + x)^(n) , the coefficients of the 5th, 6th and 7th terms are in AP Find all values of n.

Let t_(n) denote the n^(th) term in a binomial expansion. If t_(6)/t_(5) in the expansion of (a + b)^(n + 4) and t_(5)/t_(4) in the expansion of (a + b)^(n) are equal, then n is

If the coefficients of r^(th),(r + 1)^(th) and (r + 2)^(th) terms in the binomial expansion of (1 + y)^(m) are in A.P., then m and r satisfy the equation