A student is to answer 10 out of 13 questions in an examination such that he must…

MATHEMATICS · Single correct · CBSE · Mathematics · Permutations and Combinations · Permutations and Combinations

Problem

A student is to answer 10 out of 13 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is : (a) 140 (b) 196 (c) 280 (d) 346

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