How many prime numbers are there less than 13?
What are the next two numbers in this sequence: 4, 11, 18, 25, ...?
What is the sum of all the numbers on a standard clock face?
What are the ingredients with E numbers 200-299 used for in foods?
Sweeteners | Preservatives | Flavours | Colors
How many rings are there on the olympic flag?
How many feet are there in a fathom?
How many hours are there in a day?
