1. 
How many 2letter combinations are possible from the first three letters of the alphabet?


2. 
If you have three books, how many different ways are there to stack these three books on a table?


3. 
There are three sticks on the table. Each stick is a different color. How many ways are there to arrange the sticks in a line so that no two arrangements have the same color sequence?


4. 
Noah has six different kinds of cars to use on his model railroad. In how many different orders can he arrange the cars to be pulled by the engine?


5. 
* This is a premade sheet. Use the link at the top of the page for a printable page. 

6. 
Proteins are made from linear sequences of amino acids. How many different proteins could be made from the amino acids phenylalanine, glutamic acid, and lysine?

