15 is possibly the most ‘quotable’ of the double digit numbers, with everyone from Andy Warhol to Jack Sparrow using it in one way or another. It’s also the total of every row, column and diagonal in a 3 x 3 magic square containing the numbers 1-9 and the average amount of seconds an employer spends looking at an applicants CV… It’s time for some fun with numbers!

You can listen to all of the Funbers episodes from BBC Radio Cambridgeshire and BBC Radio Oxford here.