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The most popular and authoritative arithmetic book in late 17th and 18th century England, it stayed in print for 100 years.

In baking a hemispherical loaf of bread of 10" radius, the crust was everywhere of an equal thickness, and the solidity of the crust was equal to half the solid content of the whole loaf. What were the dimensions of the interior soft part?

An analysis of James Gregory's proof of the Pappus-Guldin theorem, along with the original documents both in Latin and English.

There is a lion in a well whose depth is 50 palms. He climbs and slips back a certain amount each day. In how many days will he get out of the well?

A castle has n rooms each of which has 7 samurai in it.