Two lines intersect at O. Points A 1 , A 2 . . ., A n are taken on one of them and B 1 …
Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations
Two lines intersect at O. Points A1, A2 . . ., An are taken on one of them and B1, B2, . . . , Bn on the other, the number of triangle that can be drawn with the help of these (2n + 1) points is :
- n
- n2
- n3
- n4
Answer
(C) n 3
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