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Posers and Puzzles

Posers and Puzzles

  1. 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. 05 Mar '05 18:31
    I don't know. Wat's da ans.
  3. 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. 05 Mar '05 20:23
    Nice. Well Done - Do you want the hard one now?