- A205
- B220
- C210
- D60
Step-by-Step Solution
All triples: . Triples from one side are straight lines: . Triangles .
Answer: A) 205
In the triangle shown, 3 points are marked on side AB, 4 on side BC and 5 on side CA (none at a corner). How many triangles have all three corners among these 12 points?
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