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Problems from Another Time

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

A certain man had in his trade four weights with which he could weigh integral pounds from one up to 40. How many pounds was each weight?
The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.
Given a semicircle, Prove that if O is the circle's center, DO=OE.
Two travelers, starting at the same time from the same point, travel in opposite directions round a circular railway.
Of a collection of mango fruits, the king took 1/6; the queen 1/5 the remainder, and the three princes took 1/4, 1/3 and 1/2 (of the same remainder); and the youngest child took the remaining 3 mangoes.
Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions
A merchant woman buys and sells apples and pears for Denaros. How much did she invest in apples; how much in pears?
In a circle whose circumference is 60 units, a chord is drawn forming a segment whose sagitta is 2 units. What is the length of the chord?
Prove that if the sums of the square opposite sides of any quadrilateral are equal, its diagonals interect at right angles.
Find two numbers, x and y, such that their sum is 10 and x/y + y/x = 25

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