Algebra Factoring Practice Test Results

Question 1
80% answer correctly
What`s the greatest common factor of 8 and 28?
1
2
4
8
Question 2
75% answer correctly
What`s the least common multiple (LCM) of 3 and 5?
15
3 and 5 have no common multiples
30
16
Question 3
94% answer correctly
Which of the following is not a multiple of 9?
27
45
54
65