36
60
It is: 6
The common factors are: 1, 2, 3, 6
The GCF is 2.
12 and its multiples.
The common multiples of 10 and 12 are underlined:10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120...12, 24, 36, 48, 60, 72, 84, 96, 108, 120...The answer is all the multiples of 60!
Since 30 is a multiple of 6, all multiples of 30 are common.
24, 48, 72, 96, 120, 144, 168, 192, 216 and 240....
The multiples of 3 up to 30 are: 3,6,9,12,15,18,21,24,27,30.The multiples of 5 up to 30 are: 5,10,15,20,25,30.The only common multiples are 15 and 30.The LCM is: 30
Do you mean common multiples? If so, then 30, 60, 90 etc. are common multiples of 30 and 5. If you mean multiples of 5 and factors of 30, that's 5, 15 and 30.
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.