If we have #f:{a,b,c}->{1,2,3,4,5}#.What is the number of bijective functions?

1 Answer
George C.
Apr 25, 2017

#0#

Explanation:

There are no bijections between #{a, b, c}# and #{1, 2, 3, 4, 5}#.

A bijection can only exist between two finite sets if they have an equal number of elements, in which case there are #n!# possible bijections, where #n# is the number of elements.

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