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If A and B are finite sets, such that A...

If A and B are finite sets, such that `A sub B`, then `n(A uu B)` is equal to `"………"`

A

`phi`

B

B

C

A

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
we have ,
`A cup B = A implies B subA implies A capB=B`
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OBJECTIVE RD SHARMA ENGLISH-SETS-Section I - Solved Mcqs
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  2. In a college of 300 students, every student reads 5 newspapers and eve...

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  3. If A and B are any two sets, then

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  4. which one of the following is (A-B)cup(B-A)?

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  5. if A and B are two sets them (A-B)cup (B-A)cup (AcapB)is equal to

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  6. if A,B,C be three sets such that A cup B=A cupC and Acap B=Acapc=...

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  7. Let A and B be two sets that Acap X =Bcap X=phi and Acup X=Bcup X ...

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  8. If U be the universal set and AuuBuuC=U,"then "[(A-B)uu(B-C)uu(C-A)'] ...

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  11. Solve : 2 cos^(2)theta + sin theta le 2, where pi/2 le theta le (3pi)...

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  12. 20 teachers of a school either teach mathematics or physics 12 of ...

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  13. A market research group conducted a survey of 2000 consumers and re...

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  14. A college warded 38 medals in football, 15 in basketball and 20 in ...

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  15. In a class of 55 students the number of students studying subject...

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  18. in a certain town 25% families own a cell phone 15% familesown ...

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  20. If A = {x , y}, then the power set of A is

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