Steps to making an organized list

 Pat has three posters that she would like to put on the wall, but only two will fit,
 one above the other. One is green, one is red, and one is blue.
 How many different ways can she arrange the posters on her door?

 Step 1: What do you know?

 Step 2: What are you trying to find?

 Step 3: What strategy will you use?

 Step 4: Is your work correct?

 Solve. Write your answer in a complete sentence.

 1. Pat, Emily, and Chris are having their picture taken for the yearbook.
     How many different ways can they line up in a straight line for the picture?

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