Find the least common multiple (LCM) of 12, 15, and 20.
Note
The LCM is the smallest number divisible by all given numbers. Prime factorize: 12=2^2·3, 15=3·5, 20=2^2·5; take highest powers: 2^2·3·5 = 60, so 60 is the LCM.
Find the least common multiple (LCM) of 12, 15, and 20.
The LCM is the smallest number divisible by all given numbers. Prime factorize: 12=2^2·3, 15=3·5, 20=2^2·5; take highest powers: 2^2·3·5 = 60, so 60 is the LCM.