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Digits 1-9 (Posted on 2002-06-05) Difficulty: 3 of 5
Can you arrange the digits 1-9 in any order so that:
  • The number formed by the first two digits is divisible by 2.
  • The number formed by the first three digits is divisible by 3.
  • The number formed by the first four digits is divisible by 4
  • and so on up to nine digits...
  • See The Solution Submitted by Rhonda Wendel    
    Rating: 3.1429 (7 votes)

    Comments: ( Back to comment list | You must be logged in to post comments.)
    Hints/Tips Eliminate more; Test less(Part 3) | Comment 7 of 13 |
    (In reply to Eliminate more; Test less(Part 2) by TomM)

    This leaves us with only ten possibilities to test out by actually dividing the first seven digits by 7, a vast improvement over Nick's 48
      Posted by TomM on 2002-06-07 14:55:07

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