If in the expansion of `(1+x)^n` the coefficients of 14th, 15th and 16th terms are in A.P. then n=` (A) 12 (B) 23 (C) 27 (D) 34

If in the binomial expansion of (1+x)^(n) ,the coefficient of 14th,15th and 16th terms are in A.P.,then find n.

If in the expansion of (a+b)^(n) the coefficient of 4^(th) and 13^(th) term are equal.Find the value of n

For expansion of (1 + x)^(n) , coefficient of 5th term is ___

In the expansion of (1+x)^(n) the coefficient of p^(th) and (p+1)^(th) terms are respectively p and q.Then p+q=

If coefficient of 9th, 10th and 11th terms of (1+x)^(n) are in A.P., then the value of n can be

In the expansion of (X+y)^(n) , the coefficients of the 17th and the 13th terms equal. Find the numbher of term in the expansion

how that the coefficient of (r+1) th in the expansion of (1+x)^(n+1) is equal to the sum of the coefficients of the r th and (r+1) th term in the expansion of (1+x)^(n)