If you take a round base of dough of radius z baked with a topping of tomatoes and cheese, all with a thickness of a, the formula for its volume is pi x z x z x a.
In a room of just 23 people, it's more likely than not that two people have the same birthday.
Zero is the only number that can’t be represented in Roman numerals.
If you multiply all the numbers from 1 to 10, you get the number of seconds in six weeks.
