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Mathematics, 19.09.2019 19:20, nikki225
Acomputer system uses passwords that contain exactly 4 characters, and each character is 1 of the 26 lowercase letters (a–z) or 26 uppercase letters (a–z) or 10 integers (0–9). let ω denote the set of all possible passwords, and let a and b denote the events that consist of passwords with only letters or only integers, respectively. determine the number of passwords that contain at least 1 integer. report the exact number.
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Answers: 3
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Acomputer system uses passwords that contain exactly 4 characters, and each character is 1 of the 26...
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