Question

kevin has a rabbit,a ferret, a gerbil, and a turtle.he feeds them in a different order each day.in how many different orders can kevin feed his pets?

Answer 1

four choices for the first

three for the second
two for the third
one for the fourth
4*3*2*1 = 24
usually this is called permutations and is written as n!
where n! = n * (n-1) * (n-2) ....*1