Answer
$A \times A$={(H,H),(H,T),(T,H),(T,T)}
Work Step by Step
The set defined is $A \times A$
$A \times A$={(H,H),(H,T),(T,H),(T,T)}
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.