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Four men already having denari found a purse of denari; each man has a different amount of denari before they found the purse. Find out how much denari each man has.
A round pond sits in a rectangular garden. Its center is inaccessible; however, you know the distances from each corner of the garden to the center of the pond: 60, 52, 28, and 40 yards. What is the radius of the pond?

The copybooks of two young men reveal very different purposes in learning geometry.

An analysis of James Gregory's proof of the Pappus-Guldin theorem, along with the original documents both in Latin and English.
Given four numbers whose sum is 9900; the second exceeds the first by 1/7 of the first...
A creative expression combining text, design and illustrations, originally designed for the International Congress of Mathematicians in Madrid.
Now a good horse and an inferior horse set out from Chang'an to Qi. Qi is 3000 li from Chang'an.
A lion, a wolf and a fox each take a certain amount of time to eat a goat separately. How long would it take all these animals together to eat the goat?
Find a number having remainder 29 when divided by 30 and remainder 3 when divided by 4.
A carpenter has undertaken to build a house in 20 days. He takes on another man and says; "If we build the house together, we can accomplish the work in 8 days!" How long would it take this other man to build the house working alone?

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