SATHEE: Permutations And Combinations Question 63

Permutations And Combinations Question 63

Question: In a plane there are 10 points out of which 4 are collinear, then the number of triangles that can be formed by joining these points are [RPET 1990]

Options:

A) 60

B) 116

C) 120

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

Required number of triangles $ {{=}^{10}}C_3{{-}^{4}}C_3 $ $ =120-4=116 $ .

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Permutations And Combinations Question 63

Question: In a plane there are 10 points out of which 4 are collinear, then the number of triangles that can be formed by joining these points are [RPET 1990]

Options:

Answer:

Solution:

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