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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you love solving riddles, unlocking mysteries, or completing any other brain-boosting activity, puzzle ...

Who doesn’t love a good brain teaser? There’s just something about these clever puzzles that gets kids thinking, laughing, and learning without even realising it. Brain teasers fire up their minds, ...