Posers and Puzzles

Posers and Puzzles

  1. Joined
    11 Feb '04
    Moves
    6480
    05 Mar '05 18:14
    There are fifty bags of marbles. Each bag contains 100 marbles. In 49 of the bags, each marble weighs 1 gram. In one of the bags, each marble weighs 1.01 grams. You are allowed to make one weighing on a set of digital scales, accurate to the nearest hundredth of a gram. How do you determine which bag contains the heavier marbles???
  2. Joined
    28 Jan '05
    Moves
    1392
    05 Mar '05 18:31
    I don't know. Wat's da ans.
  3. Joined
    29 Feb '04
    Moves
    22
    05 Mar '05 18:34
    For n = 1 to 50, take n marbles out of bag n, and weigh them.

    The excess weight will tell you the bag number with the heavier marbles.
  4. Joined
    11 Feb '04
    Moves
    6480
    05 Mar '05 20:23
    Nice. Well Done - Do you want the hard one now?
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