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?

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My age is a number consisting of two digits, 1/2 of this number is a mean proportional between these two digits, and two years hence, my age will be a third proportional to the same two digits, directly as they stand in my present age.

A new history of mathematics in ancient Mesopotamia, concentrating on its social aspects.

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 castle has n rooms each of which has 7 samurai in it.

A historically minded textbook designed to teach real analysis by considering some of the problems faced by 19th century mathematicians.

A leech invited a slug for a lunch a leuca away.

There are four companies, in one of which there are 6 men, in another 8, and in each of the remaining two, 9 men. How many ways can a committee of 4 men be composed by choosing one man from each company?

Here are all articles, classroom activities, and reviews arranged into annual volumes starting with 2004.

Poster of Banneker, with a brief description of his life and work.