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Questions  >>  CBSE XII  >>  Math  >>  Vector Algebra
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If $\overrightarrow{r}.\overrightarrow{a}=0,\overrightarrow{r}.\overrightarrow{b}=0$ and $\overrightarrow{r}.\overrightarrow{c}=0$ for some non-zero vector $\overrightarrow{r}$,then the value of $\overrightarrow{a}.(\overrightarrow{b}\times\overrightarrow{c})$ is___________.

$\begin{array}{1 1}0 \\ 1\\|\overrightarrow a| \\ |\overrightarrow b| \end{array} $

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