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How many number between 400 and 500 which is exactly divisible by 12 and 20?
Wiki User
∙ 12y ago
First, find the prime factors of 12,20:
12=2*2*3
20=2*2*5
Now, compute the LCM by multiplying the factors (count duplicates once):
LCM=2*2*3*5=60
Only the multiples of the LCM will be divisible by 12 and 20:
60,120,180,240,300,360,420,480,540...
{420,480}
Wiki User
∙ 12y ago
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dont kno so just helpp friendds!
