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Naugatuck Savings Bank requires its customers to select a four digit PIN code to access their accounts. Furthermore, the first digit cannot be 0 and the last digit must be even. If Sharri is a customer at Naugatuck Savings Bank, what is the probability she has the PIN 8564?



Answer :

mathstudent55

Answer:

1/4500

Step-by-step explanation:

The first digit can be one of 9 digits, 1 though 9.

The second and third digits can each be one of 10 digits.

The last digit must be even, so it is one of the five digits, 0, 2, 4, 6, 8.

The total number of different PINs available is:

9 × 10 × 10 × 5 = 4500

p(8564) = 1/4500

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