The common multiples of any two (or more) numbers are multiples of their lowest common multiple (lcm).
lcm(9, 11) = 99
→ first five common multiples are: 99, 198, 297, 396, 495
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88, 176, 264, 352, 440
They are infinite. The first five are: 11, 22, 33, 44, 55.
88, 176, 264, 352, 440.
88, 176, 264
To find the common multiples of 12 and 11, we need to list out the multiples of each number and find where they intersect. The first three common multiples of 12 and 11 are 132, 264, and 396. This is because the multiples of 12 are 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144, and so on, and the multiples of 11 are 11, 22, 33, 44, 55, 66, 77, 88, 99, 110, 121, 132, 143, and so on.