Over the next few days Full Fact is holding a Christmas quiz on our Twitter and Facebook pages.
It's the Twelve Days of Christmas.
There was a little bit of controversy in the office about this one. We're counting five gold rings as five separate gifts. We're also interpreting the song to mean that on each day of Christmas our true love gets us another set of everything from the previous days, on top of that day's gift.
More details on how to work this out can be found here.