You have a safe and the password of which can be a number of 1-10 digits. If you have the digits 0-9, How many possible passwords can you make?

Note:- 1)Please remember that the safe can accept any number of 1 to 10 digits.

2)You can leave your answer in a factorial or exponential form. No need for the absolute value

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TopNewest10^10 + 10^9 + 10^8...... – Mohamed Ashraf Mostafa · 1 year, 10 months ago

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– Mehul Arora · 1 year, 10 months ago

Yeah! Thanks!Log in to reply

\(10^{10}\) – Marc Vince Casimiro · 1 year, 10 months ago

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@Marc Vince Casimiro – Mehul Arora · 1 year, 10 months ago

How can you say that? Please provide a full explainationLog in to reply

– Marc Vince Casimiro · 1 year, 10 months ago

Hmm... I didn't notice in the question that they can be \(1-10\) digits, my answer was for \(10\)-digit password. But, well, for \(10\)-digit password, you have \(10\) choices for the first digit while on the succeeding digits, you can still repeat the digits so the answer is not \(10!\) but \[10\times10\times10\times10\times10\times10\times10\times10\times10\times10 = 10^{10}\]Log in to reply

– Mehul Arora · 1 year, 10 months ago

It would have been more helpful if you answered the REAL question. But still thanks for the little piece of information you gave me!!Log in to reply