Try to reach back into your brain to elementary math class and see if you can solve the problem plaguing social media users.

Sometimes, as geopolitical shocks. And occasionally, as Nairobi floods, it forces your parents to finally spend the night in your house. Weak brackets collapse quickly. Strong ones quietly hold.

Are your arithmetic skills from grade school still intact? Test them out with this sum that has left internet users baffled.

Update, 11:10pm ET: Apple has updated its release notes again. The company now says macOS 26.3 doesn’t fix the window resizing bug. Instead, it’s once again listed as a “known issue.” Original post ...

The iOS 26.2.1 update that Apple released today further addresses an issue preventing some older mobile phones from being able to make emergency calls. In an updated support document, Apple says that ...

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 ...

The annual World Economic Forum confab known as Davos has always had an optics problem. Picture a bunch of people descending in private jets to eat steak and appear on panels about alleviating poverty ...

Learn a clear, step-by-step approach to solving coding problems—from understanding the prompt and planning an algorithm to writing clean code and testing edge cases. These practical problem-solving ...

Abstract: Computer-assisted instruction systems have been broadly applied to help students solving math word problems. However, these systems offer little help to students encountering multi-step ...

Allan Sun is a software and systems engineer at Apple, where he works on real-time system software and infrastructure for Apple’s in-house 5G modem silicon platforms (C1X), one of the company’s most ...

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