The total number of positive integral solutions of is equal to

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

Problem

The total number of positive integral solutions of 15<x1+x2+x3≤2015<x_1+x_2+x_3\leq20 is equal to (1) 695 (2) 765 (3) 1125 (4) None of these

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