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
15 and 30
9
Multiples of 30: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450 and so on....
There is an infinite number of common multiples for 10 and 15. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder). Any multiple of 30.
21,69
15 and 30
15, 30, and 45 .
They are: 15, 30, 45, 60.
The multiples of 4 up to 30 are: 4, 8, 12, 16, 20, 24, 28.
15, 30, 45, 60, 75, 90
10, 20, 30, 40, 50, 60
60 and 42 have no common multiples under 100.
15, 30, 45, 60, 75, 90, 105, 120, 135
Multiples of 9 up to 100 are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99. Multiples of 10 up to 100 are 10, 20, 30, 40, 50, 60, 70, 80. 90, 100. The only common multiple up to 100 of 9 and 10 is 90.
Since the LCM is 12 then the common multiples are multiples of 12 12, 24, 36, 48
9
Multiples of 30: 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420, 450 and so on....