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Subjects
Class 11MathematicsPermutations and CombinationsCombinationsHard
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Triangles are to be formed from (16) points. If (8) points are collinear then how many failed selections come only from those (8) points?

Answer and explanation

Correct answer: (\binom{8}{3})

For a failed triangle (3) points are chosen from the (8) collinear points. So the number is (\binom{8}{3}).

Related tags

CombinationsClass11HardPermutations And CombinationsMathematicsClass 11 Mcq
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