if a = (i + j + k),a . b = 1 and a ×b=j-...

if `a = (i + j + k),a . b = 1` and `a ×b=j-k,` then `b` is equal to

A

`hati`

B

`i- j+k`

C

2j-k

D

2i

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The correct Answer is:

A

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