I passed PMP exam with 4 and half months preparation. I am a mom of two so I had a very busy schedule but was able to manage to study almost every day. The exam had questions very long that they took most of the time. I saw if I could answer seeing the last question to answer right away but those all are scenario based questions only that I had to understand what the situation was. It took all the 4 hours for me to answer the questions. I studied PMBOK and Rita mulcahy. The trick is to understand thoroughly the concepts and implement them in situations questions. The got tons of questions in Procurement(contract types) and Risk management( risk response strategies).I did not take a break during the exam. The main important point I wanted to tell is I have done around 2500 pmp mock questions and I got 65% on an average. All the best to every one who is preparing for the PMP.