If $\mathrm{A} imes \mathrm{B}=\{(\mathrm{a}, \mathrm{x}),(\mathrm{a}, \mathrm{y}),(\mathrm{b}, \m

Question

If $\mathrm{A} 	imes \mathrm{B}=\{(\mathrm{a}, \mathrm{x}),(\mathrm{a}, \mathrm{y}),(\mathrm{b}, \mathrm{x}),(\mathrm{b}, \mathrm{y})\}$ then A is equal to

Professor PC Thomas Classes · Answer

Set $A$ is the set of first elements of the ordered pairs $\implies \{a, b\}$.