Prime and Composite Numbers Concepts

The video tutorial explains the difference between prime and composite numbers. Prime numbers, such as 5, 17, and 23, are only divisible by one and themselves. Composite numbers, like 12, 15, 9, and 22, have more than two factors. The tutorial provides examples to illustrate these concepts, helping viewers understand how to identify each type of number.

What is the main difference between prime and composite numbers?

• Prime numbers have more than two factors.

• Composite numbers have only one factor.

• Prime numbers have exactly two factors.

• Composite numbers have exactly two factors.

Which of the following is a prime number?

• 15

• 12

• 17

• 22

Why is the number 5 considered a prime number?

• It is divisible by 1 and 5 only.

• It is divisible by 1, 2, and 5.

• It is divisible by 5 and 10.

• It is divisible by 1, 3, and 5.

Which of the following numbers is composite?

• 5

• 9

• 17

• 23

What are the factors of the number 9?

• 1, 3, and 9

• 1, 2, and 9

• 3 and 9

• 1 and 9