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In a class of 30 students, 12 students l...

In a class of 30 students, 12 students like emboidary, 16 students like physics and 18 student like history. If all students select at least one subject and none of them select all the subject then find the number of students select 2 subject.

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`= 16`
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KUMAR PRAKASHAN-SETS-PRACTICE WORK
  1. Taking the set of natural numbers as the universal set, write down the...

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  2. U= {x|x in N, 1 le x le 10}, A= {1, 3, 5, 7, 9}" and "B= {2, 5, 8}. Ve...

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  3. Fill in the blanks to make each of the following a true statement : ...

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  4. Fill in the blanks to make each of the following a true statement : ...

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  5. Fill in the blanks to make each of the following a true statement : ...

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  6. Fill in the blanks to make each of the following a true statement : ...

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  7. Fill in the blanks to make each of the following a true statement : ...

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  8. Fill in the blanks to make each of the following a true statement : ...

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  9. In a town, 20% population travel by car, 50% travel by bus and 10% pop...

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  10. Out of 100 students, 55 passed in Mathematics and 67 passed in Physics...

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  11. In a survey of a society, 1000 people speak Gujarati or Hindi. 50% peo...

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  12. In a school there are 20 teachers who teach mathematics or physics. Of...

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  13. If A and B be two sets containing 3 and 6 elements respectively. What ...

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  14. In a twon of 840 persons, 450 persons read Hindi 300 read English and ...

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  15. There are 880 boys in a school. Out of these 224 boys play cricket, 24...

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  16. A students has freedom to study any subject of his choice. In a group ...

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  17. In a class of 30 students, 12 students like emboidary, 16 students lik...

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  18. A and B are two sets. (A - B) cup B= A if and only if B sub A.

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  19. A - (B capC) = (A - B) cap (A-C) .

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  20. For any two sets A and B, prove that A cup B= A cap B iff A = B.

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