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Mathematics, 15.11.2020 02:20 lorie76

A thief steals an ATM card and must randomly guess the correct three-digit pin code from a 9-key keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first try?
The probability that the correct code is given on the first try is

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A thief steals an ATM card and must randomly guess the correct three-digit pin code from a 9-key key...

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