The least common multiple of 2 and 3 is: 6
The least common multiple of two numbers is the product of the two numbers divided by their greatest common factor. 2 and 3 are both prime, so their greatest common factor is 1.
6
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The least common multiple of 3 and 5 is 15. This, however is not a multiple of 2 so we must find the next common multiple of 3 and 5. This is 30. Since 30 is also a multiple of 2, 30 is therefore the least common multiple of 3, 5 and 2.
The word "least" is a superlative. What that means is that there cam be only one such number. Therefore 2, 3 and 5 have only one least common multiple, not least common multiples! LCM(2, 3, 5) = 30.
The LCM of 8, 9, and 10 is 360. 8 = 2^3 9 = 3^2 10 = 5 x 2 The least common multiple is therefore 2^3 x 3^2 x 5 = 360
The least common multiple of 6 and 16 is 48.6 = 2 * 3, 16 = 2 * 8, so 2 * 3 * 8 = 48 is the LCM
The least common multiple of 3 and 11 is 33.333333