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Please help!!-2

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

Note by Mehul Arora
2 years, 1 month ago

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10^10 + 10^9 + 10^8...... Mohamed Ashraf Mostafa · 2 years, 1 month ago

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@Mohamed Ashraf Mostafa Yeah! Thanks! Mehul Arora · 2 years, 1 month ago

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\(10^{10}\) Marc Vince Casimiro · 2 years, 1 month ago

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@Marc Vince Casimiro How can you say that? Please provide a full explaination @Marc Vince Casimiro Mehul Arora · 2 years, 1 month ago

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@Mehul Arora 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 \[10\times10\times10\times10\times10\times10\times10\times10\times10\times10 = 10^{10}\] Marc Vince Casimiro · 2 years, 1 month ago

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@Marc Vince Casimiro It would have been more helpful if you answered the REAL question. But still thanks for the little piece of information you gave me!! Mehul Arora · 2 years, 1 month ago

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