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Multiples of 6: 6, 12, 18, 24, 30, 36, ................ Multiples of 10: 10, 20, 30, 40, ................ 30 is the LCM (least common multiple) of 6 and 10. correct but LCM stands for lowest common multiple...
lcm(4, 9) = 36 → the two least common multiples (ie the first two common multiples) of 4 and 9 are 36 and 72.
The LCM for 2,4 &9 is.... 36
The least common multiple is 72. So take the number 72 and go through it's multiples. They will all be common multiples of 24 and 36.
Example: Find the LCM of 12 and 30.Write the multiples of 12: 12, 24, 36, 48, 60, 72, ...Write the multiples of 30: 30, 60, 90, ...The first number you find which is in both lists is the LCM: 60.