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Do you think that the number of grains of sand is infinite? Many people think that the grains of sand are uncountable, that they are infinite, but how do you prove or show them that the amount of grains is not infinite? Well, a long time ago, Archimedes, the great Greek mathematician invented a method to count the number of grains not only of the beaches of his sunny Greece, but how many are needed to fill a sphere the size of the known universe at his time ---up to Saturn!
It took for him a small amount of pages to develop his method and calculate the grains of sand needed to fill the universe. He used simple logic and simple arithmetic to arrive an upper bound for the top quantity needed grains.
Now this opus is available though Datum books for free. Download it now; for a limited time is free!
Do you think that the amount of grains of sand if not infinite is a really big number, at least the biggest number of the all? The you have to read the article: The Eddington’s number: A case of scientific arrogance? for the amount of protons in the Universe! You will be amazed at this exact count of proton particles in the Universe!
This EBook is a wonderful selection of the many puzzles the Dudeney created and also collected. Amusements in Mathematics is a classic in the mathematical literature. 44 Selected Puzzles is a hand picked selection of those puzzles that are appealing for their graphic content.
44 Selected Puzzles from Amusements in Mathematics is a nicely formatted EBook suitable for printing ---like all the EBooks offered for free in this website.
The last section of this EBook is dedicated to the solutions of all of them, exactly as Dudeney solved them.