How proficient are you in maths? You might reckon you're a dab hand at addition or multiplication, but what about deciphering number sequences? Understanding sequences is a significant part of school ...

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 ...