15 (3 x 5) and 18 (3 x 6)
3 x 5 x 6 = 90
The LCM is 90.
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The LCM is: 630
The Least Common Multiple (LCM) of 10, 18, and 15 is 90.
180
Factors: 15 = 3 x 5, 18 = 2 x 3 x 3. The LCM of two numbers = their product divided by their HCF. In this instance the product is 270 and the HCF is 3 so the LCM is 90.
LCM of 2 6 and 18 is 18.