Algebra Factoring Practice Test Results

Question 1
71% answer correctly
Which of the following is not a composite number?
17
38
9
28
Question 2
79% answer correctly
What`s the greatest common factor of 36 and 44?
1
4
8
2
Question 3
94% answer correctly
Which of the following is not a multiple of 3?
12
24
20
15