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

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

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?

There are two numbers which are to each other as 5 and 6 and the sum of their squares is 2196. What are the numbers?

Suppose a ladder 60 feet long is placed in a street so as to reach a window 37 feet above the ground on one side of the street...

There is a log of precious wood 18 feet long whose bases are 5 feet and 2.5 feet in circumference. Into what lengths should the log be cut to trisect its volume?

Twenty-three weary travelers entered a delightful forest. There they found 63 numerically equal piles of plantain fruit.

A merchant gave a university 2,814 ducats on the understanding that he was to be paid back 618 ducats per year for 9 years, at the end of which the 2,814 ducats should be considered as paid.

A certain bishop ordered that 12 loaves be divided among his clergy.

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.

How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students