The coefficients of three consecutive terms in the expansion of ( 1 + a) n are in the ratio 1:7:42 - Maths - Binomial Theorem

Question

The coefficients of three consecutive terms in the
expansion of ( 1 + a) n are in the ratio 1:7:42 find
n

Varun.Rawat · Accepted Answer

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The coefficients of three consecutive terms in the expansion of ( 1 + a) n are in the ratio 1:7:42. find n