rust8y Posted July 2, 2005 Posted July 2, 2005 (i) how many odd six-digit palindromic numbers are there? (ii) how many odd seven-digit palindromic numbers are there in which every digit appears at most twice?
DQW Posted July 22, 2005 Posted July 22, 2005 Guessing this is late enough that giving away answers now doesn't result in "cheating", so here's my guesses : (i) 500 (ii) 4725
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