1.The sum of the coefficients of three consecutive terms in the binomial expansion of (1+x)n+2(1 + x)^{n+2}(1+x)n+2, which are in the ratio 1:3:51 : 3 : 51:3:5, is equal to:a.929292b.636363c.414141d.252525Login to continueOnly logged in users canattempt or see the solution.
