The sides AB, BC and CA of a triangle ABC have a, b and c interior points on them…
Mathematics · JEE Advanced · NTA Exams — Permutations and Combinations
The sides AB, BC and CA of a triangle ABC have a, b and c interior points on them respectively, then find the number of triangles that can be construced using these interior points as vertices.
- a + b + cC3
- a + b + cC3 – (aC3 + bC3 + cC3)
- a + b + c + 3C3
- None of these
Answer
(B) a + b + c C 3 – ( a C 3 + b C 3 + c C 3 )
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