Consider the following statements in respect of sets:
1. The union over intersection of sets is distributive.
2. The complement of union of two sets is equal to intersection of their complements.
3. If the difference of two sets is equal to empty set, then the two sets must be equal.
Which of the above statements are correct?
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
For election to the Lok Sabha, a nomination paper can be filed by
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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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