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Question

If the position vectors of three points are a2b+3c,2a+3b+4c,7b+10c, then the three points are

A
collinear
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B
non – coplanar
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C
non – collinear
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D
None of these
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Solution

The correct option is A collinear
If P, Q, R are the points, then QR=2PQ. Hence, P,Q, R are collinear.

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