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The points (p+1,1), (2p+1,3) and (2p+2, ...

The points (p+1,1), (2p+1,3) and (2p+2, 2p) are collinear, if

A

p=-1

B

`p=1/2`

C

p=2

D

`p=-1/2`

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The correct Answer is:
C, D
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