SOLUTION: How many possible 5-digit zip codes are there if the numbers cannot be repeated and the zip code is divisible by two?
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Question 424171: How many possible 5-digit zip codes are there if the numbers cannot be repeated and the zip code is divisible by two? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! The zip code can end in 0,2,4, or 8
If it ends in 0, Then 0 is not allowed
in the 1st 4 digits, so are the possible codes
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If it ends in 2, then are possible codes
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If it ends in 4, then possible
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If it ends in 8, then possible
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Summing these:
(I can't find calculator)
