The Odometer Puzzler


#1

Tom/Ray (the one who remembers the Puzzler) made it harder than it had to be. It’s not a probability problem, it’s combinatorics.



You start with ten digits, you rule out the number one, leaving you with nine digits. So it’s nine to the sixth power, or 81 x 81 x 81. Simpler, no decimal points, no thought.