Algebra Factoring Practice Test Results

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