Algebra Factoring Practice Test Results

Question 1
67% answer correctly
Which of the following is a composite number?
6
11
31
17
Question 2
90% answer correctly
What`s the least common multiple (LCM) of 7 and 2?
42
14
28
56
Question 3
80% answer correctly
What`s the greatest common factor of 8 and 28?
8
1
2
4