Unformatted text preview: We have to count the number of onto functions from a 5element set to a 3element set. This number is: 3 5C (3 , 1) Â· 2 5 + C (3 , 2) Â· 1 5 = 2433 Â· 32 + 3 = 24396 + 3 = 150 . 1...
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 Spring '08
 JACK
 Math, Set Theory, Natural number, Section B1

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