The number 50 is divided by a certain number. If the divisor is increased by 3, the quotient decreases by 3.75. What is the number?

Displaying 651 - 659 of 659

Reprint of a classic biography of Gauss, with a new forward by Jeremy Gray.

A two door gate of unknown width is opened so that a 2 inch gap exists between the two doors.

Greek ladders for approximating square roots may be more ancient than the ancient Greeks. Students at any level can appreciate their beauty and simplicity. Those who have studied calculus can compare them with Newton's Method for approximating roots.

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

A history of attempts to solve cubic and higher degree polynomial equations, including the notions of group theory and their relationship to the idea of symmetry.

A gentleman has a garden of rectangular form and wants to construct a walk of equal width half way round to take up half the garden. What must be the width of this walk?

A ladder has 100 steps. On the first step sits 1 pigeon; on the second, 2; on the third, 3; and so on up to the hundredth. How many pigeons in all?

A website with links to information about numerous topics in the history of mathematics.