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Convergence articles

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As is the case with a great deal of interesting mathematics, the conic sections are believed to have been discovered in an attempt to solve a problem, a problem which on the surface seems to have nothing to do with conic sections.

A certain man had in his trade four weights with which he could weigh integral pounds from one up to 40. How many pounds was each weight?
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An elementary introduction to Euler squares and how they can be used in teacher training

A brief outline of policies for submission of articles to Loci.
A collection of short lectures by Howard Eves giving details on 20 important happenings in the history of mathematics before 1650.
In the middle of the 18th century, King Frederick the Great of Prussia became interested in creating a lottery to raise money. As was his custom when mathematical matters were involved, he called upon Leonhard Euler for counsel.
Of a collection of mango fruits, the king took 1/6; the queen 1/5 the remainder, and the three princes took 1/4, 1/3 and 1/2 (of the same remainder); and the youngest child took the remaining 3 mangoes.
A man bought a number of sheep for $225; 10 of them having died, he sold 4/5 of the remainder for the same cost and received $150 for them. How many did he buy?
Relationships between Architecture and Mathematics