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Convergence articles

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There are two numbers which are to each other as 5 and 6 and the sum of their squares is 2196. What are the numbers?
Given a right triangle where you know the length of the base and the sum of the perpendicular side and the hypotenuse.

Short sketches on how mathematicians work and think.
A survey of concepts of infinite sets over the centuries.
A guest on horseback rides 300 li in a day. The guest leaves his clothes behind and the host rides off to catch up with the guest once he discovers the clothes. Assuming the host rides without stop tell how far he can go in a day?
Page 7, Who's That Mathematician: Images from the Paul R. Halmos Photograph Collection: Blackwell, Halmos, Boas, Bollobas, Bombieri, Mumford, Bonsall, Rankin
Suppose that the propability of success in an experiment is 1/10. How many trials of the experiment are necessary to insure even odds on it happening at least once?
This is a page from the Rechenbuch of Adam Riese. It deals with the measurement of barrels. Also a page that has a table showing numbers both in German words, in Roman numerals, and in the Hindu-Arabic numerals.
One hundred men besieged in a castle, have sufficient food to allow each one bread to the weight of 14 lot a day for ten months.
A creative expression combining text, design and illustrations, originally designed for the International Congress of Mathematicians in Madrid.

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