1.

If the co-ordinates of the points P,Q,R,S be (1, 2, 3), (4, 5, 7), (– 4, 3, – 6) and (2, 0, 2) respectively, then

Answer»

If the co-ordinates of the points P,Q,R,S be (1, 2, 3), (4, 5, 7), (– 4, 3, – 6) and (2, 0, 2) respectively, then





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