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Find A xx B ,A xx A and B xx A A =B= ...

Find ` A xx B ,A xx A and B xx A`
` A =B= {p,q}`

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The correct Answer is:
`A xx B = {(p, p), (p, q), q, p), q, q)}; A xx A = {(p, p), p, q), (q, p), (q, q)}; B xx A = {(p, p), (p, q), (q, p), (q, q)}`
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