Results 1 to 6 of 6

Thread: Challenge

  1. #1
    Teach, Not Flame Kayaker's Avatar
    Join Date
    Oct 2000
    Posts
    4,079
    Blog Entries
    5

    Challenge

    Code:
    
     8809 = 6    9881 = 5
     7111 = 0    7756 = 1
     2172 = 0    5555 = 0
     6666 = 4    8193 = 3
     1111 = 0    8096 = 5
     3213 = 0    1012 = 1
     7662 = 2    7777 = 0
     9313 = 1    9999 = 4
     0000 = 4    5531 = 0
     2222 = 0    6855 = 3
     3333 = 0    2581 = ?
    

    This problem can be solved by pre-school children in 5-10 minutes,
    by programmers in an hour and by people with higher education…
    well, check it yourself!


  2. #2
    Lost in Lala Land peterg70's Avatar
    Join Date
    Oct 2001
    Location
    Down Under
    Posts
    195
    Interesting puzzle.


    I have worked out its addition by substitution
    i.e. 0 = 1, 1 = 0, 2 = 0, 3 = 0, 4 = ?, 5 = 0, 6 = 1, 7 = 0, 8 = 2, 9 = 1


  3. #3
    Registered User
    Join Date
    Jul 2007
    Posts
    61
    Blog Entries
    1
    the answer is ....

    2


  4. #4
    son of Bungo & Belladonna bilbo's Avatar
    Join Date
    Mar 2004
    Location
    Rivendell
    Posts
    310
    well, I would never solved it, but Google as usual is my friend...

    http://wiki.answers.com/Q/If_8809_equals_6_and_7111_equals_0_and_2172_equals_0_and_6666_equals_4_what_is_2581_equal_to

    Non quia difficilia sunt, non audemus, sed quia non audemus, difficilia sunt.[Seneca, Epistulae Morales 104, 26]

  5. #5
    i also googled for solution

  6. #6
    Teach, Not Flame Kayaker's Avatar
    Join Date
    Oct 2000
    Posts
    4,079
    Blog Entries
    5
    This is kind of neat. I posted this from a discussion about creative thinking, how we need to discard old patterns and pre-conceived notions. Something I'm sure everyone realizes is at times useful to reversing. From the posts so far I see at least 3 different strategies to how you solved it (including google), and one I never considered. Here's the article:

    http://codejury.com/what-genius-really-means/

    I suspect there may even be "harder" and more complex ways to solve this. Captcha? Pattern recognition?

Similar Threads

  1. Trebuchet Challenge
    By Kayaker in forum Off Topic
    Replies: 2
    Last Post: July 31st, 2006, 16:45
  2. Challenge
    By Jak in forum The Newbie Forum
    Replies: 39
    Last Post: August 4th, 2005, 10:35
  3. Mind Challenge...(or not?!)
    By xfze in forum RCE Cryptographics
    Replies: 7
    Last Post: December 5th, 2003, 00:13
  4. My Challenge To You
    By KSR0x2b in forum Mini Project Area
    Replies: 25
    Last Post: February 21st, 2002, 22:33
  5. Rsa Challenge
    By int21hex in forum RCE Cryptographics
    Replies: 10
    Last Post: January 29th, 2002, 12:07

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •