SOLUTION: An access code for a security system consists of a letter followed by four digits. The letter can be any letter in the alphabet. The first digit cannont be a zero and last digit mu

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Question 544705: An access code for a security system consists of a letter followed by four digits. The letter can be any letter in the alphabet. The first digit cannont be a zero and last digit must be even. What is the total number of possible access codes? What is the probability of not selecting the correct access code on the first guess?
Answer by stanbon(75887) About Me  (Show Source):
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An access code for a security system consists of a letter followed by four digits. The letter can be any letter in the alphabet. The first digit cannot be a zero and last digit must be even. What is the total number of possible access codes?
Ans: 26*9*10*10*5 = 117000
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What is the probability of not selecting the correct access code on the first guess?
116999/117000
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Cheers,
Stan H.