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A survey of the attempts to prove Kepler's conjecture over the past 400 years.
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.

A bibliographical reference to mathematics books printed in the new world before 1700.

A biography stressing Agnesi's deep commitment to help those in need.
What is the perpendicular height of a cloud when it's angles of elevation were 35 degrees and 64 degrees as taken by two observers?
There is a mound of earth in the shape of a frustum of a cone.
Determine the radii of three equal circles decribed within and tangent to a given circle, and also tangent to each other
The edge of a cloud is at an altitude of 20 degrees and the sun above it at 35 degrees. The shadow cast by the edge of the cloud fall on a object 2300 yards away, how high is the cloud?
Suppose that for every 4 cows a farmer has, he should plow 1 acre of land, and allow 1 acre of pasture for every 3 cows; how many cows could he keep on 140 acres?

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