The LCM is: 180
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90
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Least Common Multiple (LCM) for 3 5 3 5 is 15.
lcm(16, 20, 15) = 240. 16 = 2^4 20 = 2^2 x 5 15 = 3 x 5 lcm = 2^4 x 3 x 5 = 240
The LCM of 15 (which is 3*5) and 18 (which is 2*3^2) is 90 (which is 2*3^2*5).