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CBSE Notes 2011-2012

The coefficients of (r - 1)th, rth and (r + 1)th terms in the expansion of (1 + x)n are in the ratio...

Short answer question

The coefficients of (r - 1)th, rth and (r + 1)th terms in the expansion of (1 + x)n are in the ratio of 1:3:5 Find n and r.

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