Test: Factors I - Normal

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