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CGP EDU Academic Team
Published on: August 13, 2026
NUMERIC RESPONSE
There are 18 points in a plane such that no three of them are in the same line except five points which are collinear. The number of triangles formed by these points is
Text Solution
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NUMERIC RESPONSE
(806) A triangle can be formed by using three non-collinear points.
So, the number of triangles formed by 18 non-collinear points 
But according to the question, 5 points are collinear.
Hence, exact number of triangles
.
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