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A unit vector perpendicular to each of t...

A unit vector perpendicular to each of the vector 3i+2j+4k and 2i+j-k is,

A

`+-(- 6i+11j-k)/(sqrt(158))`

B

`+- 6i-8j+k/sqrt(104)`

C

`+- 6i-8j-k/sqrt(101)`

D

`+- 6i-8j-4k/sqrt(101)`

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The correct Answer is:
A
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