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Consider a password system that uses 10 digit numbers for password. How many possible passwords exists in the system? What is the entropy of the

Consider a password system that uses 10 digit numbers for password.

How many possible passwords exists in the system?

What is the entropy of the password system?

What would be the length of a password system with equivalent level of security that uses lowercase alphabets (English)? Hint: the two systems should have the same entropy

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