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Distance between line r=i+j+k+lambda(2i+...

Distance between line `r=i+j+k+lambda(2i+j+4k)` and plane `rdot(i+2j-k)=3` is (1)`4/(sqrt(6))` (2) `5/(sqrt(6))` (3) `1/(sqrt(6))` (4)`0 `(5) `2/(sqrt(6))`

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