This puzzle is rated 1 star (easy).
Father Christmas has to visit a lot of homes on Christmas Eve when he is out delivering presents. He usually gets a glass of sherry and a mince pie at each house too.
Now, Father Christmas can manage the sherry, but finds eating all those mince pies quite difficult. So Rudolph helps him out.
Last year Father Christmas finished his rounds with lots of mince pies to spare. He gave 25 million (25 000 000) to Rudolph.
It takes Rudolph just 10 seconds to eat a mince pie.
How long did it take Rudolph to eat all 25 million mince pies, without stopping?
An hour? A day? A week?
Check the solutions page for the correct answer.