1.

If a, b, c are three non-coplanar vectors and d is any unit vector, then |(a.d)(bxx c) + (b.d) (c xx a) + (c .d) (a xx b)|=

Answer»

`2|[ABC]|`
`(1)/(2) |[abc]|`
`|[abc]|`
`(1)/(6) |[abc]|`

ANSWER :C


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