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What numbers are multiples of five and factors of thirty?
Numbers which are the factors of thirty and multiples of five are 5, 10, 15 and 30.
What is the common multiple of 15 30 and 45?
There are infinite common multiples for a set of numbers. So it is not possible to write down all the common multiples. Some common multiples of 15, 30 and 45 are 90, 180, 270, 360,... There is another way to find common multiples: Write the multiples of LCM(15, 30, 45). Actually the common multiples of a set of numbers are the multiples of their LCM. LCM of 15, 30 and 45 is 90. And the multiples of 90 are 90, 180, 270, 360, 450, 540,... which are the common multiples of 15, 30 and 45.
What are the multiples of 3 that are also multiples of 5?
Any multiple of 15.
What numbers are multiples of 12 and 15?
Every multiple of 60 is a multiple of both 12 and 15.
What are common multiples of 3 and 15 from 1 to 100?
3:3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,99 15:15,30,45,60,75,90,105
