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Which of the following statement is FALS...

Which of the following statement is FALSE

A

If `A={x:x^(2)=4,x inN},B={-2}` then `AneB`

B

If `A={x: |x|lt2,x inI},B={-1,1}`, then A = B

C

If `A={1,2,3,4,5},B={2,1,3,3,4,4,5}` then A = B

D

If `A={x:x^(2)-5x+7=0,x inR}andB=phi`, then A = B

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The correct Answer is:
B
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DISHA PUBLICATION-SETS-EXERCISE-1 : CONCEPT BUILDER
  1. If A={1,2,(3,4),5}, then which of the following statements is incorrec...

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  2. State which of the following sets are finite sets or infinite. In case...

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  3. Which of the following statement is FALSE

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  4. The set {x : x is a positive integer less than 6 and 3^(x)-1 is an eve...

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  5. The cardinality of the set P{P[P(phi)]} is

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  6. The number of elements in the set {(a, b) : 2a^2 + 3b^2 = 35. a . b i...

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  7. If A={x:x=n^(2),n=1,2,3}, then number of proper subsets is

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  8. Let A, B, C be three sets. If AinBandBsubC then

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  9. Let V" "=" "{a ," "e ," "i ," "o," "u} and B" "=" "{a ," "i ," "k ," "...

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  10. If P={x in R : f(x)=0} and Q={x in R : g(x)=0 }, then PuuQ is

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  11. If A={1,2,3,4},B={2,3,5,6}andC={3,4,6,7}, then

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  12. If the set A and B are as follows : A={1,2,3,4},B={3,4,5,6}, then

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  13. Consider the following relations : 1. A-B=A -(Ann B) 2. A = (A nnB...

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  14. If A={x inR:0ltxlt3}andB={x inR:1lexle5} then ADeltaB is

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  15. Let X and Y be two non-empty sets such that XnnA=YnnA=phiandXuuA=YuuA ...

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  16. The set (A//B)uu(B//A) is equal to

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  17. if A ={x:x is a multiple of 3 } and , B={x:x is a multiple of 5 }...

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  18. If A and B are two sets prove that Ann(B-A)=phi

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  19. Each student in a class of 40, studies at least one of the subjects En...

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  20. If A and B are two sets, then (AuuB)'uu(A'nnb) is equal to

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