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In a group of students, 100 students kno...

In a group of students, 100 students know Hindi, 50 know English and 33 know both. Each of the students knows either Hindi or English. How many students are there in the group?

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A N EXCEL PUBLICATION-SETS-QUESTION BANK
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  2. In each of the following , determine whether the statement is true or ...

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  3. In each of the following , determine whether the statement is true or ...

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  4. In each of the following , determine whether the statement is true or ...

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  6. In each of the following , determine whether the statement is true or ...

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  7. In each of the following , determine whether the statement is true or ...

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  11. Is it true that for any sets A and B , P (A) cup P (B) = P(A cup B)? J...

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  12. Show that for any sets A and B. A=(A cap B) cup (A - B) and A cup(B - ...

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  13. Show that A cap B = A cap C need not imply B = C

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  14. Let A and B be sets. If A cap X = B cap X = phi and A cup X = B cup X ...

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  15. Find sets A,B and C such that A cap B,B cap C and A cap C are non-empt...

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  18. In survey of 60 people, it was found that 25 people read newspaper H, ...

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  19. In survery of 60 perople, it was found that 25 people read newspaper H...

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  20. In a survey it was found that 21 people liked product A,26 liked produ...

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