It is 12
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30
They are: 24 48 and 72
The Least Common Multiple (LCM) of3, 16, and 20 is 240.
The common multiples of 3 and 12 are the infinite set of numbers that are multiples of 12, which is the least common multiple of 3 and 12. The set is 12, 24, 48, 60, 72, 84, 96, 108, 120, 132, 144, 156, 168, 180, and so on.
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. Common multiples of 3 and 4 include 12, 24, 36 and so on. The LCM of 3 and 4 is 12.