In Exercises 5–36, express all probabilities as fractions. ATM Pin Numbers A thief steals an ATM card and must randomly guess the correct pin code that consists of four digits (each 0 through 9) that must be entered in the correct order. Repetition of digits is allowed. What is the probability of a correct guess on the first try?

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Asked Dec 29, 2019
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In Exercises 5–36, express all probabilities as fractions. ATM Pin Numbers A thief steals an ATM card and must randomly guess the correct pin code that consists of four digits (each 0 through 9) that must be entered in the correct order. Repetition of digits is allowed. What is the probability of a correct guess on the first try?

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Expert Answer

Step 1

There are 10 possible ways for selecting of each digit for ATM pin, they are,

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Step 2

Multiplication counting rule:

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Step 3

The ATM pin code consists of 4 digits, that is th...

Statistics homework question answer, step 3, image 1
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