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Forum: Math Puzzles

Math Puzzle Forum: For math puzzles, brain teasers, word problems

  1. 24 Game Marathon

    Mrdavid445
    5 Pages •
    1 2 3 ... 5
    game, marathon
    • Replies: 74
    • Views: 1,546
    visionc
    April 24th 2013, 06:00 AM Go to last post

  2. A magic square?

    doceave
    3 Pages •
    1 2 3
    magic, magic-square, number-grid, puzzle, square 2 Attachment(s)
    • Replies: 31
    • Views: 1,553
    Wilmer
    August 22nd 2010, 06:25 PM Go to last post

  3. Is it true that...

    wonderboy1953
    2 Pages •
    1 2
    true
    • Replies: 27
    • Views: 648
    Wilmer
    June 29th 2010, 08:25 AM Go to last post

  4. A possible new paradox puzzle?

    wonderboy1953
    2 Pages •
    1 2
    paradox, puzzle
    • Replies: 27
    • Views: 687
    wonderboy1953
    September 11th 2010, 09:46 AM Go to last post

  5. which two numbers do not belong in here?

    labrador007
    2 Pages •
    1 2
    belong, box 3x4, numbers
    • Replies: 25
    • Views: 1,043
    labrador007
    April 30th 2011, 06:30 AM Go to last post

  6. trig identity for sqrt(2)/2

    rainer
    2 Pages •
    1 2
    identity, sqrt2 or 2, trig
    • Replies: 20
    • Views: 981
    Drexel28
    January 9th 2010, 04:31 PM Go to last post

  7. Complete the series

    ontherocks
    2 Pages •
    1 2
    complete, series
    • Replies: 20
    • Views: 744
    Opalg
    April 17th 2010, 12:19 AM Go to last post

  8. It can be paint or not

    LChenier
    2 Pages •
    1 2
    paint
    • Replies: 18
    • Views: 359
    LChenier
    September 28th 2012, 01:46 AM Go to last post

  9. A leading question: what do these numbers have in common?

    wonderboy1953
    2 Pages •
    1 2
    common, leading, numbers, question
    • Replies: 16
    • Views: 691
    undefined
    July 7th 2010, 07:41 AM Go to last post

  10. Initials Quiz - Part 2

    Soroban
    2 Pages •
    1 2
    initials, quiz
    • Replies: 15
    • Views: 1,696
    Wilmer
    July 6th 2010, 12:59 AM Go to last post

  11. Very tricky business

    Tzar
    2 Pages •
    1 2
    business, tricky
    • Replies: 15
    • Views: 571
    Ackbeet
    October 29th 2010, 07:36 AM Go to last post

  12. Fun little problem

    Chris11
    2 Pages •
    1 2
    fun, problem
    • Replies: 15
    • Views: 733
    Chris11
    January 10th 2011, 07:02 PM Go to last post

  13. The role of prior knowledge in probability.

    gordonX
    2 Pages •
    1 2
    knowledge, prior, probability, role
    • Replies: 15
    • Views: 426
    gordonX
    April 24th 2013, 02:46 PM Go to last post

  14. A puzzle and a call for help.

    bruxism
    puzzle
    • Replies: 14
    • Views: 541
    Wilmer
    August 23rd 2009, 07:39 PM Go to last post

  15. Odd proof - Can you spot the error?

    SuperCalculus
    error, odd, proof, spot
    • Replies: 14
    • Views: 596
    Vertazontal
    March 8th 2010, 03:57 PM Go to last post

  16. Anagrams

    masters
    anagrams
    • Replies: 14
    • Views: 424
    harish21
    March 15th 2010, 11:06 PM Go to last post

  17. Post Puzzle needs to be solved

    tilake1
    puzzle, solved
    • Replies: 14
    • Views: 412
    Wilmer
    August 12th 2010, 08:28 AM Go to last post

  18. Cute stuff

    Wilmer
    cute, stuff
    • Replies: 14
    • Views: 645
    wonderboy1953
    November 22nd 2010, 03:38 PM Go to last post

  19. Animals in Hiding

    masters
    animals, hiding
    • Replies: 13
    • Views: 572
    Deadstar
    June 5th 2009, 04:57 AM Go to last post

  20. Number pattern.

    integral
    number, pattern
    • Replies: 13
    • Views: 489
    integral
    May 8th 2010, 06:29 PM Go to last post

  21. Letter / Number puzzle

    FoxEcho
    letter, number, puzzle
    • Replies: 13
    • Views: 376
    FoxEcho
    June 10th 2010, 10:32 AM Go to last post

  22. Interesting Problem, Please Help

    spandan
    interesting, problem
    • Replies: 13
    • Views: 416
    Vlasev
    August 5th 2010, 03:27 AM Go to last post

  23. Grouping efficiency - baskets, ingredients, and pies

    Adam12
    baskets, efficiency, grouping, ingredients, pies
    • Replies: 13
    • Views: 271
    Adam12
    October 7th 2011, 03:29 AM Go to last post

  24. Getting Nowheres Fast

    wonderboy1953
    fast, nowheres
    • Replies: 11
    • Views: 579
    wonderboy1953
    March 6th 2010, 10:18 AM Go to last post

  25. Prime or composite?

    Dinkydoe
    composite, prime
    • Replies: 11
    • Views: 802
    roninpro
    May 24th 2010, 12:24 PM Go to last post

  26. Arrow Experts still argue about this one....

    Chokfull
    argue, experts
    • Replies: 11
    • Views: 367
    CaptainBlack
    July 12th 2010, 10:59 AM Go to last post

  27. Simple Percentage Logic

    99.95
    logic, percentage, simple
    • Replies: 11
    • Views: 574
    undefined
    September 29th 2010, 12:52 PM Go to last post

  28. One more puzzle

    whyonlyme
    puzzle 1 Attachment(s)
    • Replies: 11
    • Views: 477
    dkmathguy
    April 29th 2011, 11:41 PM Go to last post

  29. Missing Tile - Need help

    Jweave
    missing, tile
    • Replies: 10
    • Views: 462
    Jweave
    April 29th 2010, 09:03 AM Go to last post

  30. Maximum distance between two stations

    Unknown008
    distance, maximum, stations
    • Replies: 10
    • Views: 843
    Unknown008
    July 22nd 2010, 07:39 AM Go to last post
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