If the coefficients of the r^ th , (r+1)^ th , (r+2)^ th terms in the expansion of (1+x)^ 14 are in AP, then...

Question

If the coefficients of the r^ th , (r+1)^ th , (r+2)^ th terms in the expansion of (1+x)^ 14 are in AP, then the largest value of r is

Accepted Answer

9

JEE Main Mathematics question