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The Twenty-Ninth Day

- Accommodating Human Needs and Numbers to the Earth's Resources

About The Twenty-Ninth Day

A lily pond, so the French riddle goes, contains a single leaf. Each day the number of leaves doubles-two leaves the second day, four the third, eight the fourth, and so on. Question: If the pond is completely full on the thirtieth day, when is it half full? Answer: On the Twenty-ninth day.

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  • Language:
  • English
  • ISBN:
  • 9780393056730
  • Binding:
  • Paperback
  • Pages:
  • 380
  • Published:
  • April 1, 1978
  • Dimensions:
  • 127x203x25 mm.
  • Weight:
  • 484 g.
Delivery: 2-4 weeks
Expected delivery: December 21, 2024
Extended return policy to January 30, 2025

Description of The Twenty-Ninth Day

A lily pond, so the French riddle goes, contains a single leaf. Each day the number of leaves doubles-two leaves the second day, four the third, eight the fourth, and so on. Question: If the pond is completely full on the thirtieth day, when is it half full? Answer: On the Twenty-ninth day.

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