2 and 3 because they're the lowest two numbers you can get between 1 and 40.
1 and 1
1 and 2
All numbers have multiples. Some numbers have some of the same multiples as other numbers. These are known as common multiples. The smallest of these is known as the least common multiple, or LCM. The LCM of 6 and 7 is 42. Multiples are an infinite set. There is no multiple so large that you can't multiply it with something to get an even larger multiple. Therefore, the greatest common multiple of 6 and 7 (or anything else) is infinite.
All numbers have an infinite amount of multiples.
To have a common multiple, there have to be two or more numbers. For example, common multiples of 4 and 8 are 8, 16, 32, 48, etc. The Least Common Multiple of 4 and 8 is 8.
the common multiples are most all of the multiples of 8
All numbers have an infinite amount of multiples.
There is no "most common multiple". To find all common multiples, you start by finding the least common multiple. All other common multiples are multiples of this least common multiple.
Each common multiple of 9 and 10 occurs exactly once (in the list of common multiples), so there is no common multiple that occurs the most. All common multiples of 9 and 10 are the multiples of their least common multiple which is 90.
All nonzero numbers have an infinite amount of multiples.
Appendages.............in multiples of........numbers........and clouds