Algebra Factoring Practice Test Results

Question 1
86% answer correctly
What`s the least common multiple (LCM) of 8 and 5?
40
160
20
80
Question 2
66% answer correctly
What`s the least common multiple (LCM) of 9 and 7?
252
64
9 and 7 have no common multiples
63
Question 3
75% answer correctly
What`s the least common multiple (LCM) of 3 and 5?
16
30
15
3 and 5 have no common multiples