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Let the line 5 8 z 2 y 6 1 x     intersect the lines 1 2 z 3 7 y 4 5 x      and 1 6 z 3 y 3 6 3 x      at the points A and B respectively. Then the distance of the mid-point of the line segment AB from the plane 2x − 2y + z = 14 is -

1. 3
2. 3 11
3. 4
4. 3 10

Correct answer: 4

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