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The number of triangle that can be for...

The number of triangle that can be formed by joining the vertices of a regular polygon of n sides is

A

`(n(n-1)(n-2))/(6)`

B

`(n(n+1)(n-2))/(6)`

C

`(n(n+1)(n+2))/(6)`

D

none

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
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