1.

If \[\mathbf{d}=\lambda \,(\mathbf{a}\times \mathbf{b})+\mu \,(\mathbf{b}\times \mathbf{c})+\nu \,(\mathbf{c}\times \mathbf{a})\]and \[[\mathbf{a}\,\mathbf{b}\,\mathbf{c}]=\frac{1}{8},\] then \[\lambda +\mu +\nu \]  is equal to

A.             \[8\mathbf{d}\,.\,(\mathbf{a}+\mathbf{b}+\mathbf{c})\]
B.             \[8\mathbf{d}\,\times \,(\mathbf{a}+\mathbf{b}+\mathbf{c})\]
C.             \[\frac{\mathbf{d}\,}{8}.\,(\mathbf{a}+\mathbf{b}+\mathbf{c})\]
D.             \[\frac{\mathbf{d}\,}{8}\times \,(\mathbf{a}+\mathbf{b}+\mathbf{c})\]
Answer» B.             \[8\mathbf{d}\,\times \,(\mathbf{a}+\mathbf{b}+\mathbf{c})\]


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