End of year weariness setting in? Revive your brain with some of our favourite puzzles, as chosen by our readers and the Plus team!
![icon](http://plus.maths.org/content/sites/plus.maths.org/files/abstractpics/5/4_oct_2011_-_1614/4_icon.jpg?1317741244)
Bid farewell to 2011 with this puzzle from Plus reader, Paulo Ferro.
![icon](/content/sites/plus.maths.org/files/abstractpics/5/1_nov_2011_-_1412/icon.jpg?1320156760)
Plus reader Aziz Inan has a question for you: Which mathematician is in their prime?
![icon](/content/sites/plus.maths.org/files/abstractpics/4/9%20Dec%202010%20-%2010%3A01/icon.jpg?1291888918)
Think you know how to use the numbers 1 to 9? Our colleague James Grime puts your digits to the test.
![](/content/sites/plus.maths.org/files/abstractpics/5/12%20Jul%202010%20-%2017%3A00/icon-9.jpg?1278950414)
Try your hand at a puzzle from the Hands-on risk and probability road show: How many socks do you need to grab to find a pair?
![](/content/sites/plus.maths.org/files/issue27/puzzle/icon.jpg?1067644800)
Buster the cosmic rabbit is playing ball with the Earth and very large piece of string... A slightly surreal take on a favourite puzzle with a very surprising answer!
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