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The ratio in which $\hat i+2 \hat j+5 \hat k$ divides the join of $-2\hat i+3 \hat j+5 \hat k$ and $7 \hat i - \hat k$ is

\[\begin {array} {1 1} (a)\;2:1 & \quad (b)\;2:3 \\ (c)\;3:4 & \quad (d)\;1:4 \end {array}\]
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(a) 2:1
answered Nov 7, 2013 by pady_1

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