What is the LCM of 20 and 40?
answer is 4020=22540=222*540 is answerLCM=least common multiplul
20: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240,…40: 40, 80, 120, 160, 200, 240, 280, 320, 360, 400, 440,…LCM(20, 40) = 40