Math Prime and Composite

what is 81's factors? And is it prime or composite?

• 1, 81; prime

• 1, 9, 81; prime

• 1, 9, 81; composite

• 1, 81; composite

Is 5 prime or composite?

• prime, because it has one factor

• prime, because it has two factors

• composite, because it has three factors

• neither

A number with exactly 2 factors is...

• prime

• composite

• even

• odd

A number with more than 2 factors is...

• prime

• composite

• even

• odd

The number 17 is ​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 1 factor pair

• more than 1 factor pair

Which of the following numbers is a prime number?

• 22

• 31

• 44

• 50

The number 11 is​ (a)   because it has ​ (b)  

• prime

• composite

• exactly 2 factors

• more than 2 factors

Are each of these numbers prime or composite?

• prime

• 10

• composite

• 7

• composite

• 15

• composite

• 12

• prime

• 3

The number 21 is ​ (a)   because it has ​ (b)  

• composite

• prime

• more than 1 factor pair

• exactly 1 factor pair

The number ​ (a)   is the only even prime number because it has ​ (b)  

• 2

• 4

• 1

• exactly two factors

• more than 2 factors

• exactly 1 factor