I tend to like like trivia and brain teasers. And here are some a co-worker shared with me. The first deals with numbers and is a quiz. And they gave the following example to help you get the idea of what they're looking for: What is the smallest number spelled with six letters? Answer: Eleven. So here we go. 1. Which four numbers have the shortest names? 2. What number is first alphabetically? 3. What number has the same number of letters as the number itself? 4. What is the one number using only letters from the second half of the alphabet? 5. What is the lowest number that contains the letter "a"? 6. What number can be spelled out using only one row on a typewriter keyboard? 7. What is the longest English word that is a valid Roman numeral? 8. What is the smallest number containing eight letters? 9. What number has all of its letters in alphabetical order? Great questions. And all I found very hard. Below are the answers. How many did you get right? 1. One, two, six and ten. 2. Eight 3. Four 4. Two 5. One thousand 6. Two 7. MIX 8. Thirteen 9. Forty