# If $O$ is origin, $|\overrightarrow{OP}|=3$ with $d.r.=(-1,2,-2)$ then the coordinate of $P$ is ?
$\begin{array}{1 1} (-1,2,-2) \\ (1,2,2) \\ (3,6,-9) \\ (\frac{-1}{9}, \frac{2}{9},\frac{-2}{9} ) \end{array}$