Question

put a check by all the prime numbers.
3
7
12
17
20
25
none of the above

Explanation:

Step1: Define Prime Number

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

Step2: Check 3

3 > 1, and its divisors are 1 and 3. So 3 is prime.

Step3: Check 7

7 > 1, and its divisors are 1 and 7. So 7 is prime.

Step4: Check 12

12 can be divided by 2, 3, 4, 6 (e.g., \(12\div2 = 6\)), so it's not prime.

Step5: Check 17

17 > 1, and its divisors are 1 and 17. So 17 is prime.

Step6: Check 20

20 can be divided by 2, 4, 5, 10 (e.g., \(20\div2 = 10\)), so it's not prime.

Step7: Check 25

25 can be divided by 5 (\(25\div5 = 5\)), so it's not prime.

Step8: Check "None of the above"

Since 3, 7, 17 are prime, this option is incorrect.

Answer:

The prime numbers are 3, 7, and 17. So the boxes to check are the ones next to 3, 7, and 17. In boxed form (indicating the numbers): \(\boxed{3}\), \(\boxed{7}\), \(\boxed{17}\) (or in terms of the checkboxes, check the boxes next to 3, 7, 17).