For many of us, maths as a subject in school was confusing, intimidating, and often dreaded. Yet in the world of brain teasers, numbers seem to transform into something far more intriguing—taking on ...

A number sequence has gone viral on the internet this week, reading: 2, 6, 12, 20, 30, ?. At first glance, it looks easy, but once people start solving it, they realize spotting the pattern is not so ...

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 ...