SOLUTION: the houses on your street are numbered 1- 120, how many house numbers contain at least one 5

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Question 940949: the houses on your street are numbered 1- 120, how many house numbers contain at least one 5
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
House numbers 50 through 59 account for 10 with at least
one 5.

The easiest way to get the others is just to list them.

5,15,25,35,45,65,75,85,95,105,115

These 11 are the only other ones which contain at least one 5:

Total: 10+11 = 21.

Edwin
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