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If X={4^(n)-3n-1n in N} and Y={9(n-1):n ...

If `X={4^(n)-3n-1n in N}` and `Y={9(n-1):n in N}` , then `X uu Y` is equal to

A

X

B

Y

C

N

D

none of these

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A
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ML KHANNA-CONCEPTS OF SET THEORY -Problem Set (1)
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  2. Let A={theta:2"cos"^(2)theta+"sin"thetale2}and B={theta:pi//2letheta...

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  3. If X={4^(n)-3n-1n in N} and Y={9(n-1):n in N} , then X uu Y is equal t...

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  4. The sets S and E are defined as given below: S={(x,y): |x-3|lt1and|y...

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  5. If A, B are two sets, prove that AuuB=(A-B)uu(B-A)uu(AnnB). Hence or...

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  6. Let n(U)=700, n(A)=200,n(B)=300 and n(AnnB)=100, then find n(A'nnB')

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  7. In a group of 1000 people, there are 750 who can speak Hindi and 400 w...

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  8. Of the members of three athletic teams in a certain school, 21 are in ...

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  9. An investigator interviewed 100 students to determine their preference...

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  10. In a survey of 200 students of a school, it was found that 120 study...

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  11. A survey shows that 63% of the Indians like cheese, whereas 76% like a...

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  12. In a pollution study of 1500 Indian rivers the following data were rep...

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  13. A group of 123 workers went to a canteen for cold drinks, ice-cream an...

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  14. A survey of 500 television watchers produced the following information...

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  15. In a town of 10,000 families it was found that 40% families buy newspa...

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  16. In a town of 10,000 families it was found that 40% families buy newspa...

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  17. In a town of 10,000 families it was found that 40% families buy newspa...

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  18. The report of one survey of 100 students stated that the numbers study...

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  19. A survey conducted on 600 students of B.A. part I classes of a college...

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  20. Let A, B, C be subsets of the universal set U. If n(U)=692,n(B)=230,</...

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