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Convergence articles

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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?

Plimpton 322
Photo of Plimpton 322, an old Babylonian Tablet, from the Plimpton Collection at the Columbia University Library. Part of the Mathematical Treasures section of Loci: Convergence.
Two Balls, No Strikes!

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.

Mystery Number

What number is that, which being increased by 1/2, 1/3, and 1/4 of itself, the sum shall be 75?

Math Pages
A general mathematics website with much information on the history of mathematics.
Dimensions of a Box

The dimensions of a rectangular box in inches are expressed by three consecutive numbers. The surface of the box is 292 square inches. Find the dimensions.

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