((14) twenty points are chosen in the plane so that no three of them are collinear. how many straight lines do they determine? how many triangles do they determine?
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number of lines C (20,2)
number of triangles C (20,3)
number of triangles C (20,3)
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number of lines is c 20,2
and c 20,3
hope it helps u
and c 20,3
hope it helps u
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