Question 1191460: Topics In Contemporary Math
Permutations and Combinations
QUESTION 8
A password must have a very specific format. It must have a capital letter from the English alphabet, then a single digit, then a special character chosen from ! @ # $ % & ? or _, then three additional letters that can be either capital OR lowercase. Assuming the letters can be repeated, how many passwords are possible?
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! 26 ways for the first
10 ways for the digit
8 ways for the special character
52^3 ways for three letters that can be capital or lowercase
The product is 292,464,640 different ways
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