Now there are six-headed four-legged animals and four-headed two-legged birds placed together.

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

Now there are six-headed four-legged animals and four-headed two-legged birds placed together.

How high above the earth must a person be raised that he [or she] may see 1/3 of its surface?

Two men start walking at the same time and travel a distance. One is walking faster and completes the journey sooner. How fast did each man travel?

If two Post-boys, A and B at 59 miles distance from one another, set out in the morning in order to meet...

Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions

There is a four-sided field whose eastern side measures 35 paces, its western side 45 paces, its southern side 25 paces and its northern side 15 paces. Find the area of this field.

The square of a certain number multiplied by itself and by 200 is 446,976. What is the number?

Suppose that for every 4 cows a farmer has, he should plow 1 acre of land, and allow 1 acre of pasture for every 3 cows; how many cows could he keep on 140 acres?

The sum of the two digits of a 2-digit number is 9. If 45 is subtracted from the number, the result will be expressed by the digits in reverse order. Find the number.

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