When there are $5$ points on the circle, how many different triangles can be formed by connecting three points? A. $10$A. $10$ B. $20$ C. $60$ D. $125$ E. $30$
1. Because $3$ points must be chosen out of $5$ points on the circle and order does not matter, $\cfrac{{5}\times{4}\times{3}}{3\times{2}\times{1}}=10$ triangles can be formed. No More Steps
