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If vec a . i = vec a . (i+j) = vec a . (...

If `vec a . i = vec a . (i+j) = vec a . (i+j+k) = 1`, then `vec a =`

A

i-k

B

i+j

C

i+j-k

D

i

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The correct Answer is:
D
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HIMALAYA PUBLICATION-VECTORS AND THEIR APPLICATIONS-QUESTION BANK
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