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Let r>1 and n>2.L and M are the coefficients of the (r+2)th and (3r)th terms in the expansion of 2n(1+x)^2n-1. If (r+2)L=(3r)M,then find n.

Let r>1 and n>2.L and M are the coefficients of the (r+2)th and (3r)th terms in the expansion of 2n(1+x)^2n-1.  If (r+2)L=(3r)M,then find n.

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4404 Points
5 years ago
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