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 ...

All you have to do to solve this puzzle is work out which number comes next in the sequence shown in the picture above. The sequence is as follows: "1, 4, 1, 5, 9, 2, (?)". How would you start to work ...