The purchase price for an apple and an orange is 100 yen. When n oranges and n + 3 apples are bought the price is 520 yen. Find the number n of oranges and the price of one orange.

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How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students

There is a circle from within which a square is cut, the remaining portion having an area of 47.6255 square units.

How much does Landowner A give to each worker knowing Landowner B gives a certain amount more and has few workers.

Title page from the Ars Magna, by Gerolamo Cardano, published in 1545. Engraved portrait of the author. First printed text of algebraic solution of cubic equations.

Two men rent a pasture for 100 liras on the understanding that two cows are to be counted as being equivalent to three sheep. The first puts in 60 cows and 85 sheep; the second 80 cows and 100 sheep. How much should each pay?

NCTM Annual Meeting in St. Louis

In this article which won the 2005 prize of HOMSIGMAA, the author discusses Eratosthenes' argument to determine the size of the earth as well as possibilities for the size which Eratosthenes found (in modern measures).

Suppose the area of an equilateral triangle be 600. The sides are required.

Page 7, Who's That Mathematician: Images from the Paul R. Halmos Photograph Collection: Blackwell, Halmos, Boas, Bollobas, Bombieri, Mumford, Bonsall, Rankin