If the coefficients of 2nd, 3rd and 4th terms in the expansion of `(1+x)^(2n)` are in AP, Show that `2n^(2)-9n+7=0`.

17.If the coefficients of 2nd,3rd and 4th terms in the expansion of (1+x)^(2n) are in A.P. Show that 2n^(2)-9n+7=0

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

If the coefficient of 2nd, 3rd and 4th terms in the expansion of (1+x)^(2n) are in A.P. , show that 2n^2-9n+7=0.

If the coefficient of 2nd,3rd and 4th terms in the expansion of (1+x)^(2n) are in A.P.P.show that 2n^(2)-9n+7=0

If the coefficients of 2nd, 3rd and 4th terms in the expansion of (1+x)^(2n) are in A.p., then prove that 2n^2-9n+7=0 .

If the coefficients of second, third and fourth terms in the expansion of (1 + x)^(2n) are in A.P., show that 2n^(2) - 9n + 7=0 .

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

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: