Which of the following expressions are meaningful [IIT 1998; RPET 2001

1.	Which of the following expressions are meaningful [IIT 1998; RPET 2001]
A.	\[\mathbf{u}\,.\,(\mathbf{v}\times \mathbf{w})\]
B.	\[(\mathbf{u}\,.\,\mathbf{v})\,.\,\mathbf{w}\]
C.	\[(\mathbf{u}\,.\,\mathbf{v})\,\mathbf{w}\]
D.	\[\mathbf{u}\times (\mathbf{v}\,.\,\mathbf{w})\]
Answer» B. \[(\mathbf{u}\,.\,\mathbf{v})\,.\,\mathbf{w}\]

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Which of the following expressions are meaningful [IIT 1998; RPET 2001]

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