The answer to this mathematical brain teaser is NOT 40 - can YOU solve it in 30 seconds by remembering the special rule?

A version of this story appeared in CNN Business’ Nightcap newsletter. To get it in your inbox, sign up for free here. The annual World Economic Forum confab known as Davos has always had an optics ...

Amateur mathematicians are using artificial intelligence chatbots to solve long-standing problems, in a move that has taken professionals by surprise. While the problems in question aren’t the most ...

Over the weekend, Neel Somani, who is a software engineer, former quant researcher, and a startup founder, was testing the math skills of OpenAI’s new model when he made an unexpected discovery. After ...

Artificial intelligence is transforming how we cure disease, defend nations, and deliver goods. But the same technology driving this surge of innovation is also testing the limits of the system that ...

This video breaks down the bizarre legal battle over who owns the JavaScript name. Despite not creating or maintaining the language, Oracle controls the trademark. The story traces how this happened ...

A peeling mural depicts the heyday of coal in Glouster, Ohio. (Michael S. Williamson/The Washington Post) Americans are wealthier than ever, but social media is full of posts and videos about how the ...

The Advent season begins this Sunday, and that means The Sound of Music will soon be on television in the United States. The ABC network airs the film classic starring Julie Andrews and Christopher ...

Quantum walk-based search algorithms have demonstrated an asymptotic quadratic speedup compared to classical search methods. Formulating a generic search problem as a (quantum) search over a graph ...

Dr. Toyin Ajayi has an ambitious mission: to make health care accessible to all. Ajayi is the founder and CEO of Cityblock Health, a primary care provider focused on helping underserved communities in ...

On Tuesday, November 4, Zohran Mamdani clinched the election for mayor of New York City, capturing just over 50 percent of the vote in a four-way race. Mamdani, a member of the New York State Assembly ...

Morgan Wallen isn't through bringing a little bit of God's country to some of the biggest stages in the US of A. The Grammy-nominated country music star, who's been on the road with his I'm the ...