Answer to Question #37676 in Combinatorics | Number Theory for Sujata Roy

Question #37676
If n>=2, then number of surjections that can be defined from {1,2,3,...n} onto {1,2} is
a) 2n
b) nP2
c) 2^n
d) (2^n)-2
1
Expert's answer
2013-12-10T04:34:07-0500
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