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The equation of the plane containing the straight line 2 x = 3 y = 4 z and perpendicular to the plane containing the straight lines 3 x = 4 y = 2 z and 4 x = 2 y = 3 z is :

1. 3x + 2y – 3z = 0
2. x + 2y – 2z = 0
3. x – 2y + z = 0
4. 5x + 2y – 4z = 0

Correct answer: x – 2y + z = 0

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