You can put this solution on YOUR website! It is well known that if the digits of a number add to a multiple of 3 then so does the number (the same property holds for 9). We look for a number such that
2_ _ is a minimum, and divides 9
so we can see the least number possible must be 207
You can put this solution on YOUR website! the smallest number greater than 200 that is divisible by both 3 and 9
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The 3 is superfluous. If it's divisible by 9 it's divisible by 3.
--> 207