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Thread: can you solve this?!

  1. May 27th, 2004, 04:18 PM #1
    ZaidGS
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    can you solve this?!

    well, i know the answer,
    i just want to see if anyone will
    answer this question.

    there are 10 groups of 10 weights.
    (so there are 100 weights as a sum)
    each weight in 9 of these groups
    have weight of 100 grams.
    and one of these groups,
    contain weights each of 90 grams.

    how can we identify which group
    of the 10 groups is the one which
    has 90grams weights,
    BY WEIGHING ONLY ONCE.
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  2. May 27th, 2004, 04:21 PM #2
    NotLKH
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    I believe the answer is as easy as 1, 2, 3...


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  3. May 27th, 2004, 09:02 PM #3
    alkatran
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    I think this is a riddle.. but whatever, can you define "weighing only once"?

    Do you mean weighing each one once? Comparing once? ...
    Don't pay attention to this signature, it's contradictory.
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  4. May 27th, 2004, 09:15 PM #4
    Something Else
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    Its an actual scale.
    Like you step on and it says "You weigh 1 + 2 + 3 + ... + 9 + 10" * 100 minus 10*k, k being the number of 90 ounce weights you placed on the scale.

    do rey me,
    a, b, c,
    1, 2, 3,
    its you and me babe....

    -lou
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  6. May 28th, 2004, 03:07 AM #5
    ZaidGS
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    is it really that easy ??!
    it needed some thinking for me !

    yes "something else" is correct,
    its an actual scale,
    which gives the sum of weights placed on it.
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  7. May 28th, 2004, 04:56 AM #6
    Acidic
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    does weighing only once mean that you can weigh each one once?
    That would sorta make it easy.
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  8. May 28th, 2004, 06:06 AM #7
    alkatran
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    Well then put 1 from group 1, 2 from group 2... up to group 9
    Don't pay attention to this signature, it's contradictory.
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  9. May 28th, 2004, 06:35 AM #8
    ZaidGS
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    Originally posted by alkatran
    Well then put 1 from group 1, 2 from group 2... up to group 9
    yeah, thats it
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