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How many 5-digit passwords are possible for the school email system if the first digit cannot be 0?

How many 5-digit passwords are possible for the school email system if the first digit cannot be 0?
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How many 5-digit passwords are possible for the school email system if the first digit cannot be 0?

User Amessihel
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1 Answer

6 votes
9*10*10*10*10=90000
.....,.........,.,.,
User Ectype
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