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Using the vertices of a polygon having 1...

Using the vertices of a polygon having 12 sides a triangle is constructed at random. The probability that the triangle so formed is such that no side of the polygon is side of the triangle is

A

`(18)/(55)`

B

`(28)/(55)`

C

`(17)/(55)`

D

`(7)/(55)`

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The correct Answer is:
B
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