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If X and Y are two sets such that X has ...

If X and Y are two sets such that X has 40 elements, `X uu Y` has 60 elements and `X nn Y` has 10 elements, how many elements does Y have?

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The correct Answer is:
`=30`
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OMEGA PUBLICATION-SETS-Multiple Choice Questions (MCQs)
  1. If X and Y are two sets such that X has 40 elements, X uu Y has 60 ele...

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  2. Which of the following is a null set

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  3. The set of A= {u: u epsilon R, u^2 = 49, 2u= 14} is

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  4. The set of intelligent students in a class is

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  5. The set of A = {x:x epsilon R, x^2 = 25) is

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  6. Which is the subset of all given sets?

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  7. The set of Girls in a Boys school is

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  8. Let S = {0, 1, 5, 4, 7), then the total number of subsets of S is

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  9. Two sets A, B are disjoint iff

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  10. Let A and B be two sets in the universal set. Then A-B is equal to

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  11. If A and B are any two sets, then A uu (A nn B) is equal to

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  12. Let A and B be two sets such that n(A)= 70, n(B)=60 and n(AuuB) = 110....

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  13. If n(A)=3 and n(B)=6 and AsubeB. Then the number of elements in AuuB i...

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  14. If n(A)= 3 and n(B) = 6 and AsubeB. Then the number of elements in A n...

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  15. The number of non-empty subsets of the set {1, 2, 3, 4) is

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  16. If A = {1, 2, 3, 4, 5}, then the number of proper subsets of A is

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  17. Let n(U)= 700, n(A)= 200, n(B) = 300 and n(Ann B)= 100, then n (A^c nn...

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  18. The number of subsets of a set having n elements is

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  19. If A and B be two sets containing 6 and 3 elements respectively, what ...

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  20. Find the Derivative of sin3x at x=pi/6

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  21. If X and Y are two sets, then X nn (X uuY) equals:

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