Given that 2^29
is a nine-digit number all of whose digits are distinct,
determine which of the ten digits is
Provide your answer without computing the actual number.
Source: SMO contest
(In reply to re: Solution
Good point. I considered this but didn't mention it since no power of 2 can be a multiple of 9.
Your post reminds me of this old website http://www.digicc.com/fido/
Try the Fido Puzzle and I'm sure you'll see the similarity.
Posted by Jer
on 2015-06-09 11:52:01