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If vec x *( vec y * vec z)=( vec x *vec y )* vec z, then which of the following option is correct?

 

If vec x *( vec y * vec z)=( vec x *vec y )* vec z, then which of the following option is correct? (a) vec x and vec y are collinear. (b) vec x and vec z are collinear. (c) vecy and vec z are collinear. (d) None

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