When there are $7$ points on the circle, how many different triangles can be formed by connecting three points? A. $35$A. $35$ B. $70$ C. $210$ D. $343$ E. $105$
1. Because $3$ points must be chosen out of $7$ points on the circle and order does not matter, $\cfrac{{7}\times{6}\times{5}}{3\times{2}\times{1}}=35$ triangles can be formed. No More Steps
