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Problems from Another Time

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

Now there is a wall 5 feet thick and two rats tunnel from opposite sides.
One hundred men besieged in a castle, have sufficient food to allow each one bread to the weight of 14 lot a day for ten months.
A merchant woman buys and sells apples and pears for Denaros. How much did she invest in apples; how much in pears?
How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students
A tree 100 units high is 200 units distant from a well; from this tree one monkey climbs down and goes to the well...
Prove that if the sums of the square opposite sides of any quadrilateral are equal, its diagonals interect at right angles.
Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions
A powerful, unvanquished, excellent black snake, 80 angulas in length, enters into a hole at the rate of 7 1/2 angulas in 5/14 of a day, and in the course of a day its tail grows 11/4 of an angula.
What will the diameter of a sphere be, when its volume and surface area are expressed by the same number?
A man has four creditors. To the first he owes 624 ducats; to the second, 546; to the third, 492; and to the fourth 368.

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