A maths brain teaser recently shared on X by an account called Brainy Quiz has caught the attention of puzzle lovers. The teaser presents a 4×3 grid, where numbers are arranged in a specific pattern, ...

Questions are sentences that ask something. We use a question mark ? at the end of a sentence to show that we're asking a question. Questions are sentences which ask something. They end with a ...

But a coronavirus infection, even without a long-covid diagnosis, can leave a mark on the brain. A 2023 brain imaging study of 223 unvaccinated people who recovered from a mild to moderate ...