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If vec a , vec b and vec c are three no...

If ` vec a , vec b and vec c` are three non-zero vectors, no two of which are collinear, ` vec a+2 vec b` is collinear with `vec c` and ` vec b+3 vec c` is collinear with ` vec a ,` then find the value of `| vec a+2 vec b+6 vec c|`.

A

Zero

B

1

C

9

D

none of these

Text Solution

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The correct Answer is:
A
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