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If vec a, vec b and vec c are non coplan...

If `vec a, vec b` and `vec c` are non coplanar then `vec a . { (vec b xx vec c)/(3vec b . (vec c xx vec a))}- vec b . {(vec c xx veca)/(2vecc. (veca xx vec b))} = `

A

- 1/2

B

- 1/3

C

- 1/6

D

44348

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The correct Answer is:
C
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