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.

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

Determine the different values of x, when a certain function hits a minimum.

Given a door and a measuring rod of unknown dimensions, the rod is used to measure the door.

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

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

The authors recount the 'great tale' of Napier's and Burgi's parallel development of logarithms and urge you to use it in class.

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

Now there is a wall 5 feet thick and two rats tunnel from opposite sides.

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