CAT
Exam
If there are 7 points out of 12 lie on the same straight line , then number of triangles thus formed is….
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- 12c3 -7c3 = 185 triangles can be formed.
- 11 years agoHelpfull: Yes(6) No(1)
- 106 triangles
by applying combination to 7 points we get 21 triangles
but 5 combinations are formed
therefore, 21*5=105 triangles
and 1 big triangle is formed
therefore, total triangles formed are 105+1=106 triangles - 8 years agoHelpfull: Yes(1) No(1)
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