There are points in a plane

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

Problem

There are 2n2n points in a plane, of which mm are collinear, where m>4m>4. The number of quadrilaterals formed is (1) Equal to (2n4)−(m4)\binom{2n}{4}-\binom{m}{4} (2) Greater than (2n4)−(m4)\binom{2n}{4}-\binom{m}{4} (3) Less than (2n4)−(m4)\binom{2n}{4}-\binom{m}{4} (4) None of these

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