Understanding Prime and Composite Numbers

The video tutorial explains the concept of prime and composite numbers. It defines a prime number as one that is only divisible by itself and one, while composite numbers have additional divisors. Examples are provided: 8 and 16 are composite, while 5 and 31 are prime. The video highlights that 2 is the only even prime number. The tutorial concludes with a brief summary and thanks viewers for watching.

What defines a prime number?

• A number divisible by 1 and itself only

• A number divisible by 2 and itself only

• A number divisible by 1, 2, and itself

• A number divisible by any number

Which of the following numbers is a prime number?

• 4

• 16

• 5

• 8

Why is the number 31 considered a prime number?

• It is divisible by 1, 2, 31, and 62

• It is divisible by 1, 31, and 62

• It is divisible by 1 and 31 only

• It is divisible by 1, 2, and 31

Which of these numbers is not a prime number?

• 8

• 5

• 31

• 2

What is unique about the number 2 among even numbers?

• It is the only even number that is composite

• It is the only even number that is prime

• It is divisible by 3

• It is the largest even number