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In a hotel there are 100 students. Out o...

In a hotel there are 100 students. Out of them 80 like to take tea and 40 like to take coffee. If 26 of them don't like to take tea and coffee both, how many of them like both ?

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KALYANI PUBLICATION-MATHEMATICAL LOGIC-EXERCISE
  1. Using various laws on operations on sets prove the following : A - ...

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  2. Using various laws on operations on sets prove the following : A nn ...

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  3. Using properties of sets prove the following : A - (B nn C) = (A- B)...

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  4. Using various laws on operations on sets prove the following : A - (...

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  5. Using various laws on operations on sets prove the following : A uu ...

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  6. If n(A uu B) = 50, n(A) = 31 and n(B) = 23, find n(A nn B), n(A-B) and...

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  7. If n(H nn E) = 11, n(H - E) = 22, n(E - H) = 12, find n(H), n(E) and n...

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  8. If n(A) = 30, n(B') = 6, n(A nn B) = 25 and n(B-A) = 37, find n(B), n(...

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  9. Every resident in Guwahati can speak either Assamese or English (or bo...

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  10. 20 students are getting 'letter marks' either in Mathematics or in Adv...

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  11. There are 60 students in a class. Out of them 25 students play foot ba...

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  12. In a hotel there are 100 students. Out of them 80 like to take tea and...

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  13. Out of 45 students, 22 of them can speak only Hindi and 11 of them can...

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  14. 2000 examinees appeared in an examination in two subjects namely Mathe...

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  15. There are 210 members in a club, 100 of them drink tea and 65 drink te...

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  16. There are 210 members in a club, 100 of them drink tea and 65 drink te...

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  17. For a certain test, a candidate could offer English or Hindi or both t...

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  18. For a certain test, a candidate could offer English or Hindi or both t...

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  19. For a certain test, a candidate could offer English or Hindi or both t...

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  20. For a certain test, a candidate could offer English or Hindi or both t...

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