Any multiple of 540.
They are multiples of 9.
To find the common multiples of 54 and 90, first list the multiples of each number. The multiples of 54 are 54, 108, 162, 216, etc. The multiples of 90 are 90, 180, 270, 360, etc. The common multiples of 54 and 90 are numbers that appear in both lists, such as 180 and 360.
18, 36, 54, 72, 90, 108.
Common multiples of 9 and 10 are all of the multiples of 90.
18, 36, 54, 72, 90, 108
There are infinity of them Here are some common multiples of 9: 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126
540, 1080, 1620 and so on.
18, 36, 54, 72, 90, 108, 126, 144 +18 . . .
since 18 is a common multiple its 18, 54, 72, 90, 108,etc 18N where n=1 to infinite
Multiples of 9 are 9 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, 180... Multiples of 30 are 30, 60, 90, 120, 150, 180... Common multiples of 9 and 30 are 90, 180... The Least Common Multiple of 9 and 30 is 90.
Multiples of 90.
The GCF of 90 and 108 is 18.