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a =i-2j+3k,b=3i+j+2k then a vector c whi...

`a =i-2j+3k,b=3i+j+2k` then a vector c which is linear combination of a and b and also perpendicular to b is ...........

A

`i+5j-4k`

B

`i-5j+4k`

C

`-(1)/(2) (i+5j-4k)`

D

None of these

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The correct Answer is:
C
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