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In order to encourage his son in the study of arithmetic, a father agrees to pay him 8 pennies for every problem solved correctly and to charge him 5 pennies for each incorrect solution.
The beginnings of land measurement in the early United States and how this affected American democracy.
Given four integers where if added together three at a time their sums are: 20, 22, 24, and 27. What are the integers?
Determine a number having remainders 2, 3, 2 when divided by 3, 5, 7 respectively.
A square circumscribed about a given circle is double in area to a square inscribed in the same circle. True of false? Prove your answer.
A circle, a square and an equilateral triangle all have the same perimeter equal to 1 meter. Compare their areas.

We invite you to send us information about these photographs of 20th century mathematicians.

A man entered an orchard through 7 gates, and there took a certain number of apples. When he left the orchard, he gave the first guard half the apples he had and 1 apple more.
On Triangles, by Regiomontanus (Johannes M�ller) (1436-1476), written in 1464 but not published until 1533.
What number which being increased by 1/2, 1/3, and 1/4 of itself, the sum shall be 75?