Challenge Response 97

The bookcase and the scale

Put on the scale:

  • 1 book from the 1st shelf
  • 2 books from the 2nd shelf
  • 3 books from the 3rd shelf
  • 4 books from the 4th shelf
  • and so on…

If the result is 55.1 kg, the heaviest books are on the first shelf. If it is 55.7 kg, the heaviest ones are on the 7th shelf, and so on.

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