Question

Asked Nov 19, 2019

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A security code consists of a person's first and last initials followed by four digits. What is the probability of guessing a person's security code on the first try?

Step 1

The probability of an event is defined as

Step 2

It is given that the security starts with the first and last initial of the person, followed by four digits. A digit has 10 possible ways and there are 26 letters in the alphabet.

The first initial can be filled with 26 ways, as there are 26 letters in the alphabet. The second digit, third and fourth digits can be filled with 10 possible ways. The last initial can be filled with 26 possible ways.

Step 3

The number of possible ways for security co...

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