1.

\left. \begin{array} { l } { ( 1 ) - 5 \hat { i } + 2 \hat { j } + 3 \hat { k } } \\ { ( 3 ) - 5 \hat { i } - 2 \hat { j } + 3 \hat { k } } \end{array} \right.

Answer»

option 1 is correct



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