Question

A circular park has 10 points on its cincumferences
how many triangles can be formed using with these
point as vertices?​

Answer 1

Step-by-step explanation:

All 10 points on the circle are non collinear.

For a triangle to be formed, we need 3 non collinear points.

Hence, the no. of triangles formed = the number ways we can select 3 points out of 10, which, by definition is

10C3= 10!/7!3!= 120.

Therefore, 120 triangles can be formed.

Answer 2

Answer:

120 triangles

All 10 points on the circle are non collinear.

For a triangle to be formed, we need 3 non collinear points.

Hence, the no. of triangles formed = the number ways we can select 3 points out of 10, which, by definition is

=10C3=10×9×83×2×1=120.

Step-by-step explanation:

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