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Which of the following is meaningless? A. vectors a.(b x c) B. vectors a x (b.c) C. vectors (a x b).c D. none of these

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Which of the following is meaningless?

A. vectors a.(b x c)

B. vectors a x (b.c)

C. vectors (a x b).c

D. none of these

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Answer is : B. vectors a x (b.c)

since, dot product is commutative

 Hence, vectors a x (b.c) is meaningless.

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