Question

How many ways can we form a triangle by using 15 non collinear points?
Select one:
O a. 15C3
O b. 15C2
O c. 10C3
O d. 12C3​

Answer 1

Answer:

option (a) is ans of question

Answer 2

Answer:

The number of triangles that can be drawn from 15 non collinear points is given by 15C3.

Step-by-step explanation:

Number of non collinear points  = 15

Collinear points:

Three or more than three points which do not lie on the same line are called collinear points.

For forming a triangle , all the three points should not lie on the same line , as it is given that no three points lie on the same line . This means all the points will contribute in the formation of the triangle.

So we have to find the combination of three points from the given fifteen points.

So the number of different groups of three points  = 15C3

So the number of different triangles  = 15C3