Algebra Factoring Practice Test Results

Question 1
67% answer correctly
What`s the greatest common factor of 48 and 24?
2
24
48
1
Question 2
86% answer correctly
What`s the least common multiple (LCM) of 8 and 5?
160
80
40
20
Question 3
65% answer correctly
Which of the following is not a composite number?
21
22
19
92