1 votes 1 votes How many triangles can be drawn from N given points on a circle? (a) N! (b) 3! (c) N! / 3! (d) (N – 1)N(N – 2)/6 bharti asked May 20, 2017 bharti 934 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 2 votes 2 votes Each set of 3 of the N points determines a triangle, and each triangle is determined in this way, so all you have to do is determine how many 3 element subsets a set of N things has. so no. of triangle's = nC3 = n(n-1)(n-2)/6 pawan kumarln answered May 20, 2017 • selected May 22, 2017 by bharti pawan kumarln comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes (d) required no. of ways= NC3= N(N-1)(N-2)/6. Akashkumar answered May 20, 2017 Akashkumar comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes nc3 triangles can be drawn from N given points on a circle. Akash Verma 1 answered Nov 13, 2017 Akash Verma 1 comment Share Follow See all 0 reply Please log in or register to add a comment.