Test: Factors I - Normal

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Question 1:   What is LCM (the least common multiple) of 4 and 5 ?
15
10
20
12
Question 2:   What is LCM of 5 and 10 ?
20
5
10
50
Question 3:   What is LCM of 8 and 6 ?
32
24
48
40
Question 4:   Write 32 as a product of prime numbers
2224
84
22222
442
Question 5:   Write 40 as a product of prime numbers
58
2225
226
2235
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