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For any two sets A and B prove the follo...

For any two sets A and B prove the following: `Ann(A^(\ )uuB)'=varphi`

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`A ∩ (A ∪ B’) = ϕ`

Consider `LHS A ∩ (A ∪ B’)`

`= A ∩ (A ∪ B’)`

`= A ∩ (A’∩ B’)`(By De–Morgan’s law)

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RD SHARMA-SETS-Solved Examples And Exercises
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  2. For any two sets A and B prove the following: A-(A-B)=AnnB

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  15. Let A and B be two sets such tat : n(A)=20 ,\ n(AuuB)=42\ a n d\ n(Ann...

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  16. Let A and B be two sets such tat : n(A)=20 ,\ n(AuuB)=42\ a n d\ n(Ann...

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