The percentage difference is usually calculated when you want to know the difference in percentage between two numbers. Microsoft Office Excel is a great tool to help you get started. In this post, we ...

Occasionally, a major mathematical discovery comes from an individual working in isolation, and this gives rise to great surprise. Such an advance was announced by Yitang Zhang six years ago. After ...

Excerpted from "The Grapes of Math: How Life Reflects Numbers and Numbers Reflect Life." Numbers were invented to describe precise amounts: three teeth, seven days, twelve goats. When quantities are ...

In the early 1970s mathematician Donald Knuth spent a sabbatical with his wife in Norway. The time was meant to be spent relaxing. Yet one night he woke up his partner in a state of agitation. He ...

What is the most bizarre real number that you can imagine? Probably many people think of an irrational number such as pi (π) or Euler’s number. And indeed, such values can be considered “wild.” After ...

Mathematicians were disturbed, centuries ago, to find that calculating the properties of certain curves demanded the seemingly impossible: numbers that, when multiplied by themselves, turn negative.