Find the LCM by prime factorisation method 40, 60, 80
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Answer:
40=2*2*2*5=2^3*5
60=2*2*3*5=2^2*3*5
80=2*2*2*2*5=2^4*5
LCM=2^4*3*5=16*15=240
240 is the LCM
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