Algebra Factoring Practice Test Results

Question 1
71% answer correctly
Which of the following is not a composite number?
28
9
38
17
Question 2
79% answer correctly
What`s the greatest common factor of 36 and 44?
2
1
8
4
Question 3
86% answer correctly
What`s the least common multiple (LCM) of 8 and 5?
160
20
40
80