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Question

The points (p - 1, p+2), (p, p+1), (p+1, p) are collinear for

A
p = 0
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B
p = 1
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C
p = - 1 / 2
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D
Any value of p
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Solution

The correct option is D Any value of p
For 3 points to be collinear.
(i) Either the slope of any two of the 3 points should be equal to the slope of any other two points. Or
(ii) The area of the triangle formed by the three points should be equal to zero.

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