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If A={1,2} and B={2,3} , then show that:...

If A={1,2} and B={2,3} , then show that:
`AxxB ne B xxA`

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The correct Answer is:
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`AxxB={1,2}xx{2,3}`
`={(1,2),(1,3),(2,2),(2,3)}`
and `BxxA={2,3}xx{1,2}`
`={(2,1),(2,2),(3,1),(3,2)}`
`therefore AxxB ne BxxA" "`Hence proved.
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