Test: Factors I - Normal

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