A = i - j
B = j + k
Consider the following points:
1.(-1, -3, 1)
2.(-1, 3, 2)
3.(-2, 5, 3)
Which of the following points lie on the line joining A and B?
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
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Which among the following events happened earliest ?
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An 80-litre solution of alcohol and water has 75% alcohol. How much water (in litres) must be added to bring down the concentration of alcohol to 60%?
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