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If (a,b) and (b,c) are elements of `AxxA`, find the set A and other elements of `AxxA`

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The correct Answer is:
`A={a,b,c}` and other elements of `AxxA` are `(a,a), (a,c), (b,a), (b,b), (c,a), (c,b), (c,c)`
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