Question

put a check by all the prime numbers.
2
3
10
15
23
29
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

• For 2: Divisors are 1 and 2. So prime.
• For 3: Divisors are 1 and 3. So prime.
• For 10: Divisors are 1, 2, 5, 10. Not prime.
• For 15: Divisors are 1, 3, 5, 15. Not prime.
• For 23: Divisors are 1 and 23. So prime.
• For 29: Divisors are 1 and 29. So prime.
• "None of the above" is not needed as 2, 3, 23, 29 are primes.

Answer:

• $\square$ 2 (checked)
• $\square$ 3 (checked)
• $\square$ 10 (not checked)
• $\square$ 15 (not checked)
• $\square$ 23 (checked)
• $\square$ 29 (checked)
• $\square$ None of the above (not checked)

(Note: In the actual task, you would physically check the boxes for 2, 3, 23, 29. The above shows which should be checked.)