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Recent questions tagged onto-functions

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2 answers
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Counting Functions
Q: The number of surjective functions f from A = { 1 , 2 , 3 , 4 , 5 , 6 } to B = { 1 , 2 , 3 , 4 , 5 } for which f(6) = 3 is ......?
Q: The number of surjective functions f from A = { 1 , 2 , 3 , 4 , 5 , 6 } to B = { 1 , 2 , 3 , 4 , 5 } for which f(6) = 3 is ......?
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