Problem 9E

Bank of America customers select their own three-digit personal identification number (PIN) for use at ATMs.

a. Think of this as an experiment and list four possible outcomes.

b. What is the probability Mr. Jones and Mrs. Smith select the same PIN?

c. Which concept of probability did you use to answer (b)?

Solution:

Step 1 of 2:

The ATM identification number consist of three-digits.

- We have to find the 4 possible outcomes for this experiment.
- We have to find the probability that Mr. Jones and MRs. Smith select the same PIN.
- We have to find the concept that we used to answer the part(b).