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Question

Three points A,B and C, whose coordinates are (3,−2,4),(1,1,1),(−1,4,−2) respectively are collinear.

A
True
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B
False
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Solution

The correct option is A True
If direction ratio of AB=direction ratio of BC
then A,B,C are collinear.
DirectionofAB=((31),(21),(41))
=(2,3,3)(1)
DirectionofBC=((1(1)),(14),(1(2)))
=(2,3,3)(2)
(1)=(2)
A,B,C are collinear.
A)True

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