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Question

The points (5,2,4),(6,-1,2) and (8,-7,K) are collinear if K is equal to


A

-2

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B

2

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C

3

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D

-1

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Solution

The correct option is A

-2


DR1S of A B = (1,-3,-2)

Dr1S of BC = (2, -6, k-2) k = -2


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