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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: Middle school
Topic ID: 23
Message ID: 1
#1, RE: a six digit number
Posted by alexb on Nov-01-00 at 04:42 PM
In response to message #0
This is a classic problem. Would it help if I told you that the first two digits are 1 and 4, and there is no 6, nor 9.