find the number of triangles formed by joining 12 different points on a plane , no three of them are collinear
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0
Answer:
The answer is 10 as 7 are Collinear
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10
Step-by-step explanation:
We know, by joining three non-collinear points a triangle forms.
∴ Three points can be selected from 12 points in.
∴ The required number of triangles
=¹²C3 =(12×11×10)/(1×2×3)
=1320/6
=220
hence, 220 triangles are formed...
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