Prime Composite Problems

Four students each wrote down a number between 30 and 40. The list shows the numbers they wrote.

Elly- 35

Ullyssess- 39

Maggie- 37

Palmer-33

Which student wrote down a prime number?

• Elly

• Ulyssess

• Maggie

• Plamer

Brenda said that the number 2 is prime becuase it has only two factors. Carla said that the number 2 is composite because it is even, and all even numbers are composite. Who is correct?

• Brenda is correct

• Carla is correct

• Both of them are correct

• Neither of them is correct

Seth's homework assignment is to write factor pairs that contain only composite numbers. Seth wrote four factor pairs for the number 132, as shown below.

6 x 22

11 x 12

3 x 44

2 x 66

Which of Seth's factor pairs contains only compostie numbers?

• 6 x 22

• 11 x 12

• 3 x 44

• 2 x 66

Look at the factor pairs for the compostie number 56.

1, 56

2, 28

4, 14

7, 8

Which is a prime factor of the compostie number 56?

• 1

• 4

• 7

• 8

What are the prime factors of 24?

• 3,8

• 1,24

• 3,4,4

• 2,2,2,3

What composite number has the following prime factors?

2,3,3

• 8

• 9

• 18

• 233

The Eagles football team uses only composite numbers on their jerseys. Each of the following numbers could have been on a jersey EXCEPT-

• 27

• 37

• 81

• 93

Which number is NOT a prime number

• 17

• 77

• 7

• 107

The runners in a race all wore numbers from 20 to 60. The number on Omar's shirt was a prime number. Which of the following could NOT be Omar's number?

• 51

• 29

• 47

• 23

Which is a prime number?

• 61

• 63

• 65

• 69