A thief steals an ATM card and must randomly guess the correct five-digit pin code from...
A thief steals an ATM card and must randomly guess the correct five-digit pin code from a 6-key keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first try?
1a. The number of possible codes is:
1b. The probability that the correct code is given on the first try is:
Homework Answers
1a. Number of options for each digit of pin = 6
Number of digits in pin = 5
Number of possible codes = 65 = 7776
1b. P(the correct code is given on the first try) = 1/Number of codes possible
= 1/7776
= 0.00013
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