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A historically minded textbook designed to teach real analysis by considering some of the problems faced by 19th century mathematicians.

To Know a Little

To find three quantities x.y, and z...

Horses and Stalls

It is required to determine whether 30 horses can be put into 7 stalls; so that in every stall there may be, either a single horse, or an odd number of horses.

Review of The Music of Pythagoras

Subtitled How an Ancient Brotherhood Cracked the Code of the Universe and Lit the Path from Antiquity to Outer Space, this is a book of entertaining stories more so than scholarly research.

Small Fish

There is a fish whose body weighs 8 ounces. How much does the whole fish weigh?

A Serious Series

Given the fraction ax/(a-x), convert it into an infinite series.

But What's in the Flasks?

Thirty flasks—10 full, 10 half-empty, and 10 completely empty—are to be divided among 3 sons so that flasks and contents should be shared equally. How may this be done?

Circle With a Chord

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?

Diameter of the Earth

The highest point of the Andes is about 4 miles above sea level.

The Ruins of Persepolis

There are two columns in the ruins of Persepolis left standing upright; one is 70 ft. above the plane, and the other 50 ft;