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The integer x has 12 positive factors. The numbers 12 and 15 are factors of x. What is x?

 Mar 19, 2019
edited by Guest  Mar 19, 2019
 #1
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If 12 and 15 are factors then LCM(12,15)=60 is a factor

 

Thus 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

 

are the 12 factors of x=60

 Mar 19, 2019
 #2
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thanks!

CorbellaB.15  Mar 19, 2019

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