"Alright," says the commander gruffly. I try not to stare at the biscuits in his beard. "This week we've captured 5 German VX-Tanks, with serial numbers numbers 3, 5, 13, 22, and 27. They stopped producing the VX line years ago, although they're just now being deployed. The first tank they made had the serial number 1, the second tank, 2, and so on. All remaining VX tanks will be rolled out in the next battle. If they made 53 or more VX tanks, we'll lose the next battle, although if they only made 52 VX tanks - or if they made fewer than 52 - we'll win for sure. What're our chances?"
What's the probability England is going to win the next battle? In other words, what's the probability that the Germans produced 52 VX tanks or fewer?