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There are p coplanar parallel lines. If ...

There are p coplanar parallel lines. If any 3 points are taken on each of the lines, the maximum number of triangles with vertices at these points is:

A

`3p^(2)(p-1)+1`

B

`3p^(2)(p-1)`

C

`p^(2)(4p-3)`

D

None of these

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The correct Answer is:
c
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