What are the first 2 common multiples of 8 and 9 that are less than 100?
LCM(8,9) = 72
There are no other common multiples less than 100
To find the common multiples of 8 and 9, we can start by listing the multiples of each number and finding where they overlap.
The multiples of 8 are: 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, ...
The multiples of 9 are: 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, ...
As you can see, the first common multiple is 72, as it is a multiple of both 8 and 9.
To find the second common multiple, we continue listing the multiples until we find another number less than 100 that is a multiple of both 8 and 9. We can see that 72 is already a multiple of both, so the next number in the list that satisfies this condition is 144, but it is greater than 100.
Therefore, the first two common multiples of 8 and 9 that are less than 100 are 72 and 72.