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Number of triangles that can be formed b...

Number of triangles that can be formed by joining the `10` non-collinear points on a plane is

A

a) `136`

B

b) `140`

C

c) `128`

D

d) `120`

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The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-PERMUTATIONS AND COMBINATIONS -Assignment Section A Objective type questions (One option is correct )
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  2. A polygon has 90 diagonals , number of its sides is

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