Of all the factors of 30, how many are prime numbers? How many are composite numbers?
The factors of 30 are: 1,2,3,5,6,10,15,30
There are three prime numbers: 2, 3, 5
There are four: 6, 10, 15, 30
The factors of 30 are: 1,2,3,5,6,10,15,30
There are three prime numbers: 2, 3, 5
There are four: 6, 10, 15, 30