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Voehet Voehet
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9 years ago
Came across this problem and it stumped me. Any help would be appreciated.
List all the functions from the two-element set {1,2} to the three-element set
{a,b,c}.
For this I put (1,a)(2,a)(1,b)(2,b)(1,c)(2,c) but I don't know if that is right or not.
Which functions, if any, are one-to-one?
 Which functions, if any, are onto?
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rsbrsb
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9 years ago
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