AN excellent way to see one’s own country, or one’s own century, is to visit another. While I was making just such a mental pilgrimage to the eighth century, a recent interest in unconventional ...

To carry out their calculations, merchants in the early 13th century used an abacus or a system called finger reckoning. Commerce changed when Leonardo of Pisa — known today as Fibonacci — published ...

In a world full of gadgets and technology it's easy to be lazy about things like adding numbers in your head. Even a simple calculator is often more favourable to counting on both hands. But ...

Number System and Arithmetic are the two most basic, but extremely important, topics of Quantitative Aptitude. They make the foundation of one’s QA skills and go a long way in making one do well in ...

MANY people find large numbers difficult to understand and hard to appreciate. Hence they do not follow with ease many of the interesting results which have, during the last quarter of a century, ...