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In a survey of 60 people, it was found t...

In a survey of 60 people, it was found that 25 people read newspaper H, 26 read newspaper T, 26 read newspaper I, 9 read both H and I, 11 read both H and T, 8 read both T and I, 3 read all three newspapers. Find:
the number of people who read at least one of the newspapers.

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The correct Answer is:
52
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NCERT GUJARATI-SETS-MISCELLANEOUS EXERCISE ON CHAPTER 1
  1. In each of the following, determine whether the statement is true or f...

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

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

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

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

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  6. Let A, B, and C be the sets such that A ∪ B = A ∪ C and A ∩ B = A ∩ C....

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  7. Show that if A ⊂ B, then C – B ⊂ C – A.

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  8. Assume that P ( A ) = P ( B ). Show that A = B

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  9. Is it true that for any sets A and B, P ( A ) ∪ P ( B ) = P ( A ∪ B )?...

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  10. Show that for any sets A and B, A = ( A ∩ B ) ∪ ( A – B ) and A ∪ ...

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  11. Using properties of sets, show that A ∪ ( A ∩ B ) = A

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  12. Using properties of sets, show that A ∩ ( A ∪ B ) = A.

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

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  14. Let A and B be sets. If A ∩ X = B ∩ X = φ and A ∪ X = B ∪ X for some s...

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  15. Find sets A, B and C such that A ∩ B, B ∩ C and A ∩ C are non-empty s...

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  16. In a survey of 600 students in a school, 150 students were found to be...

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  17. In a group of students, 100 students know Hindi, 50 know English and 2...

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

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  19. In a survey of 60 people, 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 prod...

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