math question

[Qarmonist]

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how many 5 digit zip codes can there be if none start with the digit zero?

 

[jaerob]

how many 5 digit zip codes can there be if none start with the digit zero?

Qarmonist-

I believe this is the correct answer to your question (I hope, hahaha). Since a zip code has five characters/spaces and you have nine numbers (1-9) to choose from for the first space and ten numbers (0-9) to choose from for the remaining four spaces the number of possible zip codes should be 9*10*10*10*10 = 90,000. Hope that helps =)

-Jae-

 

[jk5177]

Qarmonist-

I believe this is the correct answer to your question (I hope, hahaha). Since a zip code has five characters/spaces and you have nine numbers (1-9) to choose from for the first space and ten numbers (0-9) to choose from for the remaining four spaces the number of possible zip codes should be 9*10*10*10*10 = 90,000. Hope that helps =)

-Jae-

That is correct.