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  • Help me understand! - Sets, Relations and Functions - JEE Main-2

If A-B=\phi ; and A\cap B=A=B  then  A\cup B=  ?

  • Option 1)

    \phi

  • Option 2)

    \cup

  • Option 3)

    A

  • Option 4)

    B

 

Answers (1)

best_answer

As we learned

 

Idempotent Law -

AUA=A

A\capA=A

-

 

 

Since A-B=\phi

and AAB = A B

Then A=B; and A\cup B=A=B

 


Option 1)

\phi

Option 2)

\cup

Option 3)

A

Option 4)

B

Posted by

gaurav

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