\( A, B, C \) and \( D \) are four points such that
\( \mathrm{P} \... VIDEO
\( A, B, C \) and \( D \) are four points such that
\( \mathrm{P} \) \( A B=m(2 \hat{i}-6 \hat{j}+2 \hat{k}), B C=(\hat{i}-2 \hat{j}) \) and
W
\( C D=n(-6 \hat{i}+15 \hat{j}-3 \hat{k}) \). If \( C D \) intersects \( A B \) at
some point \( E \), then
(1) \( m \geq \frac{1}{2} \)
(2) \( n \geq \frac{1}{3} \)
(3) \( m=n \)
(4) \( mn \)
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