probability

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sud21: Master | Next Rank: 500 Posts; Posts: 344; Joined: Sat Nov 12, 2011 3:21 am; Thanked: 1 times; Followed by:2 members

by sud21 » Sat Jan 28, 2012 10:22 pm

Any 3 of the 8 points in a xy-plane are not in the same line. At most how many different triangles can be made with the 8 points?

Source: Beat The GMAT — Problem Solving | Sat Jan 28, 2012 10:22 pm

rijul007: Legendary Member; Posts: 588; Joined: Sun Oct 16, 2011 9:42 am; Location: New Delhi, India; Thanked: 130 times; Followed by:9 members; GMAT Score:720

by rijul007 » Sat Jan 28, 2012 11:02 pm

sud21 wrote:Any 3 of the 8 points in a xy-plane are not in the same line. At most how many different triangles can be made with the 8 points?

8C3

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