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Mathematics, 28.01.2020 08:31 AvaHeff

Each person that works at a company is given a 5-digit code. these employees must enter their codes on a keypad to enter and exit the office building. the company has 80 employees.
a) how many codes are possible if there are no restrictions?
b) what is the probability of someone entering a 5-digit code at random and gaining entry?

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