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Let A and B be two sets such that n(A)=5...

Let A and B be two sets such that `n(A)=5\ a n d\ n(B)=2,\ if\ a ,\ b ,\ c ,\ d ,\ e` are distinct and `(a ,2),\ (b ,3),\ (c ,2),\ (d ,3),\ (e ,2)` are in `AxxB` , find A and B.

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Since `(a,2),(b,3),(c,2),(d,3),(e,2) `are elements of `AxxB`
{`a,b,c,d,e}inA and {`2,`3}inB`
It is given that` n(A)=5` and `n(B)=2`
`∴A={a,b,c,d,e} and B={2,3}`
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