Now there are six-headed four legged animals and four-headed two-legged birds. Find the total number of animals and birds.

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

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

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.

Seven men held equal shares in a grinding stone 5 feet in diameter. What part of the diameter should each grind away?

Given a pyramid 300 cubits high, with a square base 500 cubits to a side, determine the distance from the center of any side to the apex.

A man bought a number of sheep for $225; 10 of them having died, he sold 4/5 of the remainder for the same cost and received $150 for them. How many did he buy?

A barrel has various holes in it. The fist hole empties the barrel in three days...

In a rectangle, having given the diagonal and perimeter, find the sides

Given two circles tangent to each other and to a common line, determine a relationship between the radii and the distance between the tangent points.