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QUESTION
How do you find the Least common multiple of 20, 30?
##lcm(20,30)=60##
multiples of 20:##" "{20,40,60,80,100,120,140,160,180..}##
multiples of 30:##" "{30,60,90,120,150,180,...}##
common multiples;##" "{60,120,180...}##
##lcm(20,30)=60##
