The coefficients of three consecutive terms in the expansion of ( 1 + a) n are in the ratio 1:7:42. find n Share with your friends Share 0 Varun.Rawat answered this Here is the link for answer to your query! https://www.meritnation.com/ask-answer/question/how-we-will-suppose-d-3-consecutive-terms-in-expansion-of-1/binomial-theorem/1701793 0 View Full Answer