The neighborhood association sent a survey asking families to rank their concerns for the neighborhood. The four items listed were crime, recycling, speeding, and trash collection. In how many ways can a family answer this survey?
There are four topics for the first answer, three topics for the second answer, two topics for the third and one topic for the fourth. The number of ways to answer is:[tex]4\times3\times2\times1=24\ ways[/tex]
