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Problems from Another Time

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

The highest point of the Andes is about 4 miles above sea level.
What is the perpendicular height of a cloud when its angles of elevation were 35 degrees and 64 degrees as taken by two observers at the same time...
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.
When knowing the sum of their ages along with another equation, determine how old a father and son are.
There is a round town 8000 feet in circumference.
How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students
A California miner has a spherical ball of gold, 2 inches in diamter, which he wants to exchange for spherical balls 1 inch in diameter. How many of the smaller spheres should he receive?
Now there are six-headed four-legged animals and four-headed two-legged birds placed together.
The sum of two numbers is 10 and their product is 40. What are the numbers?
Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions

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