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 ...
Are you ready to really test your maths skills? You might consider yourself a bit of a pro when it comes to addition or multiplication, but how do you fare when it comes to working out number ...
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