It has to be, if you think about it...
Their product, 7524
The LCM of 7 and 9 is their product. There is no common multiple that is smaller.
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The least common multiple of 4 and 9 is 36.36
The least common multiple of the numbers 4 and 9 is 36.
36. 9 and 4 do not have any prime factors in common. (9 = 3 x 3; 4 = 2 x 2) Therefore, you can find the least common multiple for 9 and 4 by multiplying them together. 9 x 4 = 36.
The least common multiple of 4 , 9 , 11 = 396
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