good for a few guesses; but not for a lot guesses.
所有跟帖:
• Yes,we can cancel 81,49,36,25,16 by number theory. -jinjing- ♀ (0 bytes) () 06/17/2010 postreply 16:13:58
• Yes,we can cancel 81,49,36,25,16 by number theory. -jinjing- ♀ (0 bytes) () 06/17/2010 postreply 16:13:58