If I were to give 7 pennies to each beggar at my door, I would have 24 pennies left in my purse. How many beggars are there and how much money do I have?

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

Imagine an urn with two balls, each of which may be either white or black. One of these balls is drawn and is put back before a new one is drawn.

A horse halving its speed every day runs 700 miles in 7 days.

Suppose a lighthouse is built on the top of a rock; the distance between a place of observation and that part of the rock level with the eye is 620 yds.

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

In a forest, a number of apes equal in number to the square of 1/8 of the total number of apes are noisy. The remaining 12 apes are on a nearby hill irritated. What is the total number of apes in the pack?

Rabbits and pheasants are put in a basket.

Find the area of the elliptical segment cut off parallel to the shorter axis;

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

A number of 3 digits in base 7 has the same three digits...