2:1: The class of degree he received in Geography from the University of St. Andrews.
2: Number of times he has received treatment in hospital: he was operated on when he was 10 for a depressed fracture of the skull after being hit with a golf club by a friend, and he also had an operation when he was 16 on a finger that he broke playing rugby.
10: Age in months when he undertook his first royal engagement — a trip to New Zealand and Australia with his parents.
8: Age in years when he first went to boarding school.