Question

methods to find the greatest 3 digit number which is exactly divisible by 9 15 and 18​

Answer 1

LCM of 9,15 and 18 is 90

The largest three digit number = 999

=> 999÷90

Quotient = 99 , Remainder = 9

if we subtract the 9 from 999, we get the largest three digit number which is exactly divisible by 9,15 and 18 so, 999-9 = 990

The largest three digit number is 990.

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