AMC / AIME · Inclusion-Exclusion · Medium
Inclusion-Exclusion: How many surjective functions are there from a math-element set to a math-element set?
Unions without double-counting.
Try the problem
How many surjective functions are there from a -element set to a -element set?
Hint and answer
Concept to use
Three sets.
Hint
.
Answer
150
More Inclusion-Exclusion problems
Practice more with the free Inclusion-Exclusion worksheet generator, or browse the full problem library.