How many different line segments are formed by joining pairs

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Reference no: EM131569833

Question: Ten points in the plane, no three collinear, are given.

(a) How many different line segments are formed by joining pairs of these points?

(b) How many different triangles are formed by the line segments in (a)?

(c) If A is one of the ten points, how many of the triangles in (b) have A as a vertex?

Reference no: EM131569833

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