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Class 11MathematicsPermutations and CombinationsCombinationsExpert
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Among (12) points, (5) points are collinear. How many triangles can be formed from these points?

Answer and explanation

Correct answer: (210)

Subtract the impossible ( \binom{5}{3} ) from total ( \binom{12}{3} ), giving (210). A triangle needs three non-collinear points.

Related tags

Class11CombinationsTrianglesCollinearExpertPermutations And CombinationsMathematicsClass 11 Mcq
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