# Convergence articles

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In order to encourage his son in the study of arithmetic, a father agrees to pay him 8 pennies for every problem solved correctly and to charge him 5 pennies for each incorrect solution.

An oracle ordered a prince to build a sacred building, whose space would be 400 cubits, the length being 6 cubits more than the width, and the width 3 cubits more than the height. Find the dimensions of the building.

There is a number which when divided by 2, or 3, or 4, or 5, or 6, always has a remainder of 1, and is truly divisible by 7. It is sought what is the number.

The three sides of a triangular piece of land, taken in order, measure 15, 10, and 13 chains respectively.

A certain man had in his trade four weights with which he could weigh integral pounds from one up to 40. How many pounds was each weight?

Download the three winning essays to learn about Kepler's mathematical astronomy, the roots of modern algebra, and the Quadrivium of Isidore of Seville.

Find the height of a window.

The earliest known example of a printed book on arithmetic, dates to 1478. Also known as the Art of Calculation.

A lively history of number systems and number theory from earliest times up to the notion of "infinity".

The work of ten scientists who thought deeply about patterns.