(a) How many functions are there from a set with four elements to a set with three elements?
(b) How many of these functions are one-to-one?
(c) How many are onto?

Question

(a) How many functions are there from a set with four elements to a set with three elements? 
(b) How many of these functions are one-to-one? 
(c) How many are onto?

Quizplus · Accepted Answer

The Answer of (a) How many functions are there from a set with four elements to a set with three elements? 
(b) How many of these functions are one-to-one? 
(c) How many are onto?

(A) How Many Functions Are There from a Set with Four