1.

If vec(a) = (1,2,3), vec(b) = (2,-1,1), vec(c ) = (3,2,1) and vec(a) xx (vec(b) xx vec(c )) = alpha vec(a) + beta vec(b) + gamma vec(c ), then

Answer»

`alpha =1, beta = 10, gamma=3`
`alpha = 0, beta = 10, gamma= -3`
`alpha + beta + gamma = 8`
`alpha = beta = gamma = 0`

Answer :B


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