Question

put a check by all the prime numbers.
5
8
15
19
22
25
none of the above

Explanation:

Step1: Recall prime number definition

A prime number is a number greater than 1 that has no positive divisors other than 1 and itself.

Step2: Check each number

• 5: Divisors are 1 and 5. Prime.
• 8: Divisors include 2, 4. Not prime.
• 15: Divisors include 3, 5. Not prime.
• 19: Divisors are 1 and 19. Prime.
• 22: Divisors include 2, 11. Not prime.
• 25: Divisors include 5. Not prime.

Answer:

• $\square$ 5 (checked)
• $\square$ 8 (not checked)
• $\square$ 15 (not checked)
• $\square$ 19 (checked)
• $\square$ 22 (not checked)
• $\square$ 25 (not checked)
• $\square$ None of the above (not checked)