Determine the greatest 3- digit number exactly divisible by 8,9 and 12
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the LCM of 8,9 and 12=72
let the greatest 3 digit no.is 999
Divide 999÷72
Reminder =59
sub the reminder from 999
999-53=946
therefore 946 is the greatest 3 digit no. which is exactly divisible by 8,9 and 12.
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