A student is allowed to select at least one and at most books from a collection of books

MATHEMATICS · Subjective · CBSE · Mathematics · Permutations and Combinations · Permutations and Combinations

Problem

A student is allowed to select at least one and at most nn books from a collection of (2n+1)(2n+1) books. If the total number of ways in which the student can select books is 6363, find nn.

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