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If $A \times B=\{(a, x),(a, y),(b, x),(b, y)\}$. Find $A$ and $B$.
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$\mathrm{A}=$ set of first distinct elements $=\{a, b\}$
$\mathrm{B}=$ set of second distinct electments $=\{x, y\}$.
$\mathrm{B}=$ set of second distinct electments $=\{x, y\}$.
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