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Let a, b,c be distinct non-negative numb...

Let `a, b,c` be distinct non-negative numbers. If the vectors `ai + aj + ck, i + k` and `ci + cj + bk` lie in a plane, then c is the

A

`c^(2)=ab`

B

`a^(2)=bc`

C

`b^(2)=ac`

D

none of these

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A
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MARVEL PUBLICATION-VECTORS-TEST YOUR GRASP
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  17. i · (j xx k) + j · (k xx i) + k · (i xx j ) =

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