When there are $6$ points on the circle, how many different triangles can be formed by connecting three points? A. $20$A. $20$ B. $40$ C. $120$ D. $216$ E. $60$
1. Because $3$ points must be chosen out of $6$ points on the circle and order does not matter, $\cfrac{{6}\times{5}\times{4}}{3\times{2}\times{1}}=20$ triangles can be formed. No More Steps
