Test: Factors I - Challenging

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Question 1:   What is LCM (the Least Common Multiple) of 25 and 105 ?
250
2625
1050
525
Question 2:   What is LCM of 14 and 196 ?
2744
196
1372
392
Question 3:   What is LCM of 12,15
60
72
90
75
Question 4:   Write 108 as a product of prime numbers
274
22335
22333
1111
Question 5:   Write 99 as a product of prime numbers
22311
3311
33322
23333
Question 6:   Write 186 as a product of prime numbers
33335
2331
223311
233511
Question 7:   What is HCF (the Highest Common Factor) of 116,24 ?
4
2
1
12
Question 8:   What is HCF of 425 and 952 ?
17
85
68
1
Question 9:   What is HCF of 320 and 860 ?
32
320
40
20
Question 10:   Solve: 2 5 3 2 57
2520
10080
5040
10800