If the coefficients of 5th, 6th, 7th terms of `(1+x)^n` are in A.P. then `n=`

If the coefficients of 2nd, 3rd, 4th terms of (1+x)^n are in A.P. then n=

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

If the coefficients of 3rd, 4th , 5th terms in (1+x)^(2n) are A.P. then 4n^2 -26n + 40 =

If the coefficients of 3rd, 4th , 5th terms in (1+x)^(2n) are A.P. then 4n^2 -26n + 40 =

If the coefficients of 2nd, 3rd and 4th terms of (1+x)^(2n) are in A.P., then n equals

If the coefficients of 5^(t h) , 6^(th) and 7^(th) terms of (1+x)^(n) are in arithmetic progression, then the value of n is

If in the binomial expansion of (a+x) ^(n) where n is a natural number, the coefficients of 5 th, 6 th and 7 th terms are in A.P., then n is equal to-

If the coefficients of the 6th and 5th terms of expansion (1+x)^(n) are in the ratio 7:5 , then find the value of n.

In a binomial expansion (1+x)^(n),n is a positive integer, the coefficients of 5th, 6th and 7th terms are in A.P., then the value of n is

In a binomial expansion (1 + x)^n is a positive integer, the coefficients of 5th, 6th and 7th terms are in A.P., then the value of n is :