rust8y Posted July 2, 2005 Share 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? Link to comment Share on other sites More sharing options...
DQW Posted July 22, 2005 Share 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 Link to comment Share on other sites More sharing options...
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