On a certain ground stands two poles 12 feet apart, the lesser pole is 35 ft. in height and the greater 40 ft. It is sought, if the greater pole will lean on the lesser, then in what part will it touch?

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A collection of short biographical sketches of people involved in the development of calculus, as well as brief descriptions of important events in that development.

Arithmos seminars are 24-hour workshops on the classics of mathematics, read in the original, or in a scholarly English translation.

Images of the first printed edition of Euclid's Elements

A father wills his estate valued at $40, 000 to his three children. Before the settlement one of the children dies. What should the other two receive?

A discussion of why we use "e" to represent the base of the natural logarithm system.

Imagine an urn with two balls, each of which may be either white or black. One of these balls is drawn and is put back before a new one is drawn.

A lady has two silver cups, and only one cover for both. The first cup weighs 16 oz, and when it is covered it weighs 3 times as much as the second cup; but when the second cup is covered, it weighs 4 times as much as the first.

A collection of articles on using the history of mathematics of the past 200 years in the undergraduate classroom.

The sum of the two digits of a 2-digit number is 9. If 45 is subtracted from the number, the result will be expressed by the digits in reverse order. Find the number.