Test: Factors I - Normal

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Question 1:   What is LCM (the least common multiple) of 4 and 5 ?
20
10
12
15
Question 2:   What is LCM of 5 and 10 ?
50
5
10
20
Question 3:   What is LCM of 8 and 6 ?
24
40
32
48
Question 4:   Write 32 as a product of prime numbers
442
2224
84
22222
Question 5:   Write 40 as a product of prime numbers
2235
2225
58
226
Question 6:   Write 50 as a product of prime numbers
252
235
255
510
Question 7:   What is HCF (the highest common factor) of 15 and 20 ?
3
10
2
5
Question 8:   What is HCF of 48 and 24 ?
24
8
12
6
Question 9:   What is HCF of 27 and 18 ?
18
6
9
3
Question 10:   Solve 2 2 35
30
48
50
60