Find the least common multiple (LCM) of 12, 15, and 20.
Note
Take the highest powers of prime factors: 12=2^2·3, 15=3·5, 20=2^2·5 so LCM = 2^2·3·5 = 60.
Find the least common multiple (LCM) of 12, 15, and 20.
Take the highest powers of prime factors: 12=2^2·3, 15=3·5, 20=2^2·5 so LCM = 2^2·3·5 = 60.