Back

Question: 2016 Fall Final - 1

Author: Michiel Smid

Consider a set $A$ having size 7 and a set $B$ having size 9. How many functions $f : A \rightarrow B$ are there?

(a)

$9!$

(b)

$7!$

(c)

$9^7$

(d)

$7^9$