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If `a = I + j, b = j + k and c = k +i`, a unit vector parallel to `a + b + c` is

A

`2i + 2j + 2k`

B

`(I + j + k)/(2sqrt3)`

C

`(I + j + k)/sqrt3`

D

`(a + b + c)/sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
C
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