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.

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

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

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

If the coefficient of 2nd , 3rd and the 4th terms in the expansion of (1+x)^(n) are in AP, then the value of n is

If the coefficients of 2nd , 3rd and 4th terms of the expansion of (1+x)^(2n) are in A.P. then the value of 2n^2 -9n + 7 is

If the coefficients of 2nd , 3rd and 4th terms of the expansion of (1+x)^(2n) are in A.P. then the value of 2n^2 -9n + 7 is