a-security-badge-code-is-made-up-of-55-characters-each-character-can-be-any-uppe

Question

A security badge code is made up of 55 characters. Each character can be any uppercase letter from A to Z or any digit from 00 to 99, except that the first character must be a letter and the last character must be an even digit. What is the probability of guessing the correct badge code on the first attempt?

Accepted Answer

16,065,280\frac{1}{6,065,280}

Answer

14,852,224\frac{1}{4,852,224}

Answer

11,679,616\frac{1}{1,679,616}

Answer

12,099,520\frac{1}{2,099,520}