Question

What's the greatest 3 digit number that leaves no remainder when divided by 10, 15 and 20 ⁉️❓

Answer 1

At first we have to find L.C.M of 10, 15 and 20
which is 60.
now, the greatest 3 digit no. =999
and by dividing 999 by 60, we get 39 as remainder.
so, the required no.= 999-39=960.
thus, 960 is the greatest 3 digit number divisible by 10, 15 and 20.
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