They are all multiples of 9.
Their common multiples are 405, 810, 1215 and so on.
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Oh, what a happy little question! Multiples of 27 include 27, 54, 81, and so on. Multiples of 9 include 9, 18, 27, and more. Multiples of 15 are 15, 30, 45, and beyond. And multiples of 81 include 81, 162, 243, and many more. Just remember, each number has its own special multiples waiting to be discovered!
Any multiple of 405.
The common multiples of 15 and 27 are numbers that can be evenly divided by both 15 and 27. To find the common multiples, we need to identify the multiples of each number and then determine the numbers that appear in both lists. The multiples of 15 are 15, 30, 45, 60, 75, 90, etc., and the multiples of 27 are 27, 54, 81, 108, etc. The common multiples of 15 and 27 are numbers that appear in both lists, such as 45, 90, 135, etc.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
as in the multiples? 9 18 27 36 45 54 63 72 81 90 99 ...