Algebra Factoring Practice Test Results

Question 1
72% answer correctly
Which of the following is a composite number?
23
4
5
19
Question 2
66% answer correctly
What`s the least common multiple (LCM) of 9 and 7?
64
252
63
9 and 7 have no common multiples
Question 3
93% answer correctly
What`s the least common multiple (LCM) of 9 and 2?
36
54
18
72