If `a_1,a_2,a_3 and a_4` be any four consecutive coefficients in the expansion of `(1+x)^n`, prove
Channel: Doubtnut
Date: 2020-04-05

If `a_1,a_2,a_3 and a_4` be any four consecutive coefficients in the expansion of `(1+x)^n`, prove that `a_1/(a_1+a_2)+a_3/(a_3+a_4)= (2a_2)/(a_2+a_3)`