Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.

The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the biological sex, reproductive organs, and sexual characteristics that develop in a person.

Problem solving, worked examples, and erroneous examples have proven to be effective learning activities in Intelligent Tutoring Systems (ITSs). However, it is generally unknown how to select learning ...

A new mathematical brain teaser asks people to make the equation true by moving two matchsticks in under 10 seconds. The puzzle will determine if you are in the top two percent.

Learn and revise how to solve quadratic equations by factorising, completing the square and using the quadratic formula with Bitesize GCSE Maths Edexcel.

That includes the OG stars of the X-Men movies, and a new rumor could solve a long-standing criticism from those Fox titles.

Learn about the Fama French Three Factor Model, its formula, and how it enhances portfolio analysis by incorporating size and value risks beyond CAPM.

Share or comment on this article: Easy-looking math equation mystifies people as they forget 'special rule' - can you solve it in 30 seconds?

Coffee grinders used to be a mystery, unless you knew someone at a lab. We used a new tool to analyze our top coffee grinder picks, and maybe make better coffee.

Biomedical engineering (BME) focuses on the advances that improve human health and health care at all levels and is the application of the principles and problem-solving techniques of engineering to ...

Sen. Dan Sullivan, R-Alaska, who is accompanying Turner on the trip, said one message the secretary is receiving is that many Alaskan leaders consider the formula HUD uses to disperse federal dollars ...