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A man agreed to pay for 13 valuable houses worth $5000 each, what the last would amount to, reckoning 7 cents for the first, 4 times 7 cents for the second, and so on, increasing the price 4 times on each to the last.
Three equal circumferences with radii 6" are tangent to each other. Compute the area enclosed between them.
This is a regular monthly colloquium meeting at Adelphi University in Garden City, NY

[Translation of title: Algebra in the Time of Babylon. When Mathematics Were Written on Clay.] A thorough review of Jens Hoyrup's revision, expansion, and French translation of his own 1998 book for Danish high-school students.

The Tree of Proportions and Proportionality from the De Divina Proportione of Luca Pacioli published in 1509.
A square walled city measures 10 li on each side. At the center of each side is a gate. Two persons start walking from the center of the city.
Three vertical posts along a straight canal, each rising to the same height above the surface of the water. By looking at the line of vision, determine, to the nearest mile, the radius of the earth.
A vessel is anchored in 3 fathoms of water and the cable passes over a sheave in the bowspirt which is 6 ft above the water.
Given a right triangle where you know the length of the base and the sum of the perpendicular side and the hypotenuse.

There were two men, of whom the first had 3 small loaves of bread and the other, 2.

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