An old calculator uses a seven-segment display, in which numerals are represented by different patterns of vertical and horizontal line segments. But the device is faulty and no longer shows any ...

A new brain teaser, shared by the social media account Brainy Quiz on X, has left many scratching their heads. The teaser, ...

A few users believed they had cracked the code. “It’s simple if you notice the pattern—multiply the number by itself, then subtract it,” one user explained. Meanwhile, another joked, “I was good at ...