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Convergence articles

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The answer to the following question is obtained using as optimum strategy-the farmer is getting the "best deal" possible. Can you figure out the solution strategy?...
Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line close by one side of it.
The history of the four color problem with sketches of the attempted proofs in the nineteenth century and an outline of the computer proof of the twentieth century.
In baking a hemispherical loaf of bread of 10" radius, the crust was everywhere of an equal thickness, and the solidity of the crust was equal to half the solid content of the whole loaf. What were the dimensions of the interior soft part?
Relationships between Architecture and Mathematics

The author shows how teachers can use Leonhard Euler's original works in the classroom to explore Euler's famous polyhedral formula,
V + F = E + 2.

An oblong garden is a half yard longer than it is wide and consists entirely of a gravel walk...
A four-sided town measures 1100 feet on one side and 1000 feet on the other side, on one edge 600 and the other edge 600.
A collection of biographies of sixty mathematicians from the eighteenth century to the twentieth.
What is the sum of the following series, carried to infinity: 11, 11/7, 11/49, etc.?