Sunday, April 5, 2009

15 bags

You have 15 bags. How many crystal balls do you need to have a different number of balls in each bag?

PS: try to solve with less than 30 balls
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2 comments:

  1. AnonymousApril 5, 2009 at 4:06 AM

    15 balls, if I can employ the 'Matryoshka technique' :D.

    ReplyDelete
  2. AndreaApril 9, 2009 at 12:24 AM

    14 using the Matryoshka model, leave the last one empty.

    ReplyDelete

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