24. 12 times 2 is 24. 24 times 1 is 24.
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I assume you mean LCM, least common multiple. The least common multiple of 3 and 4 is 12. 12 is a multiple of 3. 12 is a multiple of 4. No smaller number is a multiple of both 3 and 4.
The least common factor of 5 and 12 is the smallest number which divides both of them and it is 1, as it is for all pairs of numbers.(It is also the highest common factor of 5 and 12, as 5 and 12 only have one common factor: 1.)The least, or lowest, common multiple of a pair of numbers is the smallest number which is a multiple of both of them, which for 5 and 12 is 60.
The Least Common Multiple (LCM) is the smallest number that two or more numbers will divide into evenly and 12 is the smallest number that both 4 and 6 divide into evenly.
There is no greatest common multiple of any set of numbers. Whatever number you say is their greatest common multiple, I can add their lowest common multiple and get an even greater number.I suspect you want one of:Greatest Common Factor (the highest (positive) number that divides into both without any remainder): GCF(72, 12) = 12Lowest Common Multiple (the lowest (positive) number that is a multiple of both, that is they both divide into without any remainder); LCM(72, 12) = 72
This is the lowest common multiple which is the smallest number greater than 0 which is a multiple of all the numbers. for example the lowest common multiple (lcm) of 4 and 6 is 12 as 12 is the first (smallest) number greater than 0 that is a multiple of both 4 and 6.