Solve the problem.
-Three noncollinear points determine a triangle. How many triangles can be formed with 7 noncollinear points?
A) 35
B) 21
C) 210
D) 840

Question

Quizplus · Accepted Answer

To form a triangle, we need to choose 3 points out of the 7 noncollinear points. The number of ways to choose 3 points from 7 is given by the combination formula C(n, k) = n! / (k!(n-k)!), which is C(7, 3) = 7! / (3!4!) = 35.

Solve the Problem. -Three Noncollinear Points Determine a Triangle. How Many Triangles Can