SOLUTION: zip code sequence of five digits were introduced by the united states post office department in 1963 how many zip codes are possible?zip codes for delaware, new york, and pennsylva
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Question 907414: zip code sequence of five digits were introduced by the united states post office department in 1963 how many zip codes are possible?zip codes for delaware, new york, and pennsylvania begin with the digit 1. how many such zip codes are possible?
I got 10^5 for the first part Answer by Edwin McCravy(20055) (Show Source):
