You'll need to pay careful attention to every detail of this puzzle if you want to crack it correctly. Tackling brainteasers is a brilliant way to maintain your mental sharpness. Exercising your brain ...

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 ...