PRIME NUMBERS AND FACTORS

Choose the 2 prime #'s out of this list 1, 2, 3, 4, 6, 8, 12, 24

2 and 3

Of the factors of 28, which #'s are prime factors?

2 and 7

What are the prime factors of 30?

2,3,5

What number between 30 and 40 has only one and itself as factors

31

12 is a factor of 24

True

2 is a factor of 6

True

Tim is a supervisor. He has a dozen workers. He decides he can create three shifts of four. Is Tim's decision correct?

True

composite number

any number that is not a prime number

prime factor

factor that is also a prime number

What are the factors of 20?

1, 2, 4, 5, 10, 20

List all the factors of 15

1, 3, 5, 15

Choose all the prime # from this list of #'s 1, 7, 15, 21, 22, 23, 5

7,23,5

even number

number divisible by 2

odd number

number not divisible by 2

factor

number that divides evenly into another number

prime number

number that has only itself and one as factors. The number one is not considered a prime number