Question #220003
Suppose a password of 4 characters, the first 2 being letters in the English alphabet and the last 2 being digits. Find the total number of ways a person can choose a password
1
Expert's answer
2021-07-25T17:18:12-0400

Repeats are allowed


262⋅102=6760026^2\cdot10^2=67600

Repeats are not allowed


26(25)(10)(9)=5850026(25)(10)(9)=58500


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