Hi All,
This question ultimately comes down to doing some basic arithmetic and staying organized.
Each of the 1-digit house numbers (numbers 1 - 9, inclusive) requires one plate, so that's 9 houses and 9 plates
Each of the 2-digit house numbers (numbers 10 - 99, inclusive) requires two plates, so that's 90 houses and 180 plates
So far, we've used 9 + 180 = 189 of the 1212 total plates available, which leaves us with 1212 - 189 = 1023 plates
Each of the 3-digit house numbers (numbers 100 - 999, inclusive) requires three plates...
With 1023 plates remaining, we can put numbers on 1023/3 = 341 additional houses
Total houses = 9 + 90 + 341 = 440
Final Answer:
GMAT assassins aren't born, they're made,
Rich
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