When there are $10$ points on the circle, how many different triangles can be formed by connecting three points? A. $120$A. $120$ B. $240$ C. $720$ D. $1000$ E. $360$
1. Because $3$ points must be chosen out of $10$ points on the circle and order does not matter, $\cfrac{{10}\times{9}\times{8}}{3\times{2}\times{1}}=120$ triangles can be formed. No More Steps
