Q. 11

Mark the correct alternative in the following :

If in the expansion of occurs in rth term, then

A.r = 10

B. r = 11

C. r = 12

D. r = 13

Answer :

Given:





x4(15-k)-3k = x-17


60-4k-3k = -17


-7k = -77


k= 11


So, the term is 12th term.

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