An excellent book surveying the history of the philosophy of mathematics from the time of Plato to the nineteenth and early twentieth centuries.

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The king of France entered into a battle and was defeated. How many soldiers did he have before he was defeated?

Find the two numbers such that multiplying one by the other makes 8 and the sum of their squares is 27

I found a stone but did not weigh it; after I added to it 1/7 of its weight and then 1/11 of this new weight, I weighed the total at 1 mina. What was the weight of the stone?

An image of the calendar, together with instructions for its use

This is the title page to the 1811 edition of the Descriptive Geometry of Gaspard Monge (1746-1818). This book deals with methods for representing three-dimensional objects in two dimensions. It was written to accompany Monge's courses at the Ecole Polytechnique in Paris.

Find two number with sum 20 and when squared their sum is 208.

Find two numbers, x and y, such that their sum is 10 and x/y + y/x = 25

If an equilateral triangle whose area is equal to 10,000 square feet be surrounded by a walk of uniform width, and equal to the area of the inscribed circle, what is the width of the walk?

In how many ways can a vowel and a consonant be chosen out of the word "logarithms?"