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

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

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

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 in the (1+x)^(2n) are in A.Pshow that 2n^2-9n+7=0

Let n be a positive integer. If the coefficients of 2nd, 3rd, 4th terms in the expansion of (1+x)^n are in A.P., then find the value of 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 in the expansion of (1+x)^(n) the coefficient of 2nd, 3rd and 4th terms are in A.P., then the value of n is-

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