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Posers and Puzzles

Posers and Puzzles

  1. 16 Jun '04 17:18
    You might ike these:

    http://www.magicandillusion.com/tric/idisc/idisc01.html

    http://digicc.com/fido/

    http://www.magicandillusion.com/tric/idisc/idisc01.html
    (Click Flash button on left, and then 'Flash mind reader' in next window.)
  2. Standard member jimmyb270
    Top Gun
    18 Jun '04 07:27
    I've sussed how the first one works, but I don't have a pen and paper to try the Fido one.
  3. 19 Jun '04 21:18
    the first one is simple: all the cards are different the second time, but you are expected to only notice that your card is gone - check it

    the second doesn't work. it always guesses a single-digit number (unless it is temporarily messed up for some reason)
  4. 19 Jun '04 21:53 / 2 edits
    Originally posted by Mouse2
    the second doesn't work. it always guesses a single-digit number (unless it is temporarily messed up for some reason)
    That's what it is supposed to do.

    1) Choose a 4-digit number, eg. 9433
    2) Rearrange its digits to make a another 4-digit mumber, 3934
    3) Subtract the smaller number from the larger. 9433 - 3934 = 5499
    4) Circle one of the digits of the resulting number. (But not '0' 'cos that's already a circle.) eg. circle '5'
    5) Input into the computer the remaing 3 digits. Here, these are '4', '9', and '9'.
    6) The computer will now read your mind and output which number you circled, but only if you concentrate real hard on that number.

    .
  5. Standard member TheMaster37
    Kupikupopo!
    20 Jun '04 11:00
    Originally posted by THUDandBLUNDER
    That's what it is supposed to do.

    1) Choose a 4-digit number, eg. 9433
    2) Rearrange its digits to make a another 4-digit mumber, 3934
    3) Subtract the smaller number from the larger. 9433 - 3934 = 5499
    4) Circle one of the digits of the resulting number. (But not '0' 'cos that's already a circle.) eg. circle '5'
    5) Input into the computer ...[text shortened]... which number you circled, but only if you concentrate real hard on that number.

    .
    Do the same, and give me the three digits, i will guess the fourth digit
  6. 20 Jun '04 13:59
    Originally posted by TheMaster37
    Do the same, and give me the three digits, i will guess the fourth digit
    2, 3, and 4
  7. Standard member TheMaster37
    Kupikupopo!
    20 Jun '04 15:32 / 1 edit
    Originally posted by THUDandBLUNDER
    2, 3, and 4
    the fourth digit was a 9.

    EDIT; i do not use the site to rad your mind That would be unfair.
  8. 12 Aug '04 07:25
    unless i messed up the site gave me the wrong number

    do this one

    322
  9. 13 Aug '04 12:27
    Originally posted by Garrison
    unless i messed up the site gave me the wrong number

    do this one

    322
    2
  10. 13 Aug '04 12:49 / 1 edit
    rule 1) For any number, the number modulo 9 is equal to the sum of its digits modulo 9

    So by scrambling the digits of the original number we don't change the sum of the digits and we don't change its value modulo 9

    i.e, when we take the scrambled number away from the original we have done the sum: (9x + m) - (9y + m)

    Hence the answer will be 9*(x-y)

    Hence we know the answer is 0 modulo 9

    Knowing three of the digits of the answer, using rule 1 we can work out the fourth (modulo 9), it is 9 - (sum of 3 digits). We have to add 9 if that sum results in zero or a negative number.
  11. 13 Aug '04 16:10
    well i had 3622 and i picked the 6... did i mess it up somewhere?
  12. 24 Aug '04 18:20 / 1 edit
    Originally posted by Garrison
    well i had 3622 and i picked the 6... did i mess it up somewhere?
    Following the instructions Thud and Blunder gave, if your original number was 3622, then you would have to scramble its digits to give (eg) 6223, then you take the smaller number away from the larger to get 2601, you remove one of the digits from THIS number (eg the 6) and tell me 201 - I then tell you that the digit you removed was a 6.

    Did you do all that? What was your starting number?