A bank PIN is a string of four digits, each digit 0-9. How many choices are there for a PIN if the first digit cannot be
Posted: Mon Nov 15, 2021 10:46 am
A bank PIN is a string of four digits, each digit 0-9. How many choices are there for a PIN if the first digit cannot be a 0, also, even digit and odd digit cannot be next to each other? (Repeat digit is allowed.) Explain how you arrived at your answer - and DO NOT simplify your answer. Answer without explanation will not receive full credit.