If →p=→b×→c[→a→b→c], →q=→c×→a[→a→b→c] and � – InterviewSolution

1.	If →p=→b×→c[→a→b→c], →q=→c×→a[→a→b→c] and →r=→a×→b[→a→b→c], where →a, →b and →c are three non-coplanar vectors, then the value of the expression (→a+→b+→c)⋅(→p+→q+→r) is
Answer» If $\to p = \frac{\to b \times \to c}{[\to a \to b \to c]}, \to q = \frac{\to c \times \to a}{[\to a \to b \to c]}$ and $\to r = \frac{\to a \times \to b}{[\to a \to b \to c]}$ , where $\to a, \to b$ and $\to c$ are three non-coplanar vectors, then the value of the expression $(\to a + \to b + \to c) \cdot (\to p + \to q + \to r)$ is

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