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Co-ordinate Geometry

If P (-1, 4, -3) is one end of a diameter PQ of the sphere
x + y + z - 3x - 2y + 2z - 15 = 0, then the co-ordinates of Q are:
1. (-2, 4, -1)
2. (-4, 2, 1)
3. (4, 2, -1)
4. (4, -2, 1)

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