Test: Factors I - Challenging

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Question 1:   What is LCM (the Least Common Multiple) of 25 and 105 ?
1050
525
2625
250
Question 2:   What is LCM of 14 and 196 ?
1372
392
2744
196
Question 3:   What is LCM of 12,15
72
90
75
60
Question 4:   Write 108 as a product of prime numbers
1111
22335
274
22333
Question 5:   Write 99 as a product of prime numbers
23333
22311
3311
33322
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