We can’t claim this as one of our own but it is one of my favourites:
What comes next in this sequence:
Some people get it straight away (including Bart Simpson, much to the frustration of his more academically-acclaimed sister Lisa who didn’t, when it was famously featured in The Simpsons). Here’s what comes next:
Notice that all the figures have a vertical line of symmetry. Cover up the left hand side of each figure and you should see the pattern straight away.
Interestingly, my 7-year old got it before I did. It may have helped him that he still reverses most of his digits when he write them though – on this occasion it’s worked to his advantage!
Here’s the sequence in full: