Asked by Tintin
Ten distinct noncollinear points are chosen on a plane. a) How many line segments can be formed by joining any two of these points?
Answers
Answered by
Reiny
A line segment is formed by choosing any two points and joining them
So it comes to C(10,2)
= 10!/(8!,2)
= 45
So it comes to C(10,2)
= 10!/(8!,2)
= 45
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