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Given a number, take 1/3 of the number away from itself and also remove 2. If this result is multiplied by itself, it equals the number plus 24. What is the number?

Measuring America

The beginnings of land measurement in the early United States and how this affected American democracy.

Four Numbers

Given four numbers whose sum is 9900; the second exceeds the first by 1/7 of the first...

Sugar per Pound

What proportions of sugar at 8 cents, 10 cents and 14 cents per pound, will compose a mixture worth 12 cents per pound?

Review of Eratosthenes' Geography

An English translation of Eratosthenes' Geography, which includes "On the Measurement of the Earth."

Out to Pasture 2

X, Y and Z hired a pasture for the season for $90.00. Each has a different number of mules and are on the pasture for a different number of days. How much is each to pay?

Farmer's Best Deal

How many calves, goats and pigs did the farmer buy?

Ars Magna Title Page

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.

Convergence Advisory Board 2004-2009

Amazing Traces of a Babylonian Origin in Greek Mathematics

Aspects of classical Greek mathematics are compared with areas of Babylonian mathematics.