1. The problem statement, all variables and given/known data A system , which comprises three components (A , B and C ) , the system fails if the first component ( A) has failed or if the other two fail simultaneously. It will be assumed that all components operate independently. Question: Choose from the following diagrams that best fits this description : http://i.imgur.com/JRFGFkS.png 2. Relevant equations 3. The attempt at a solution My answer: http://i.imgur.com/B6Op3ym.png Just want to make sure I'm correct. Thanks.