If $A \times B =\{(p, q),(p, r),(m, q),(m, r)\},$ find $A$ and $B$
If $A \times B =\{(p, q),(p, r),(m, q),(m, r)\},$ find $A$ and $B$
$A=$ set of first elements $=\{p, m\}$
$B =$ set of second elements $=\{q, r\}$
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