OMG, i create duplicate post,

there is another thread talk about this.

http://pmzilla.com/pta-theory-x-y-z-hygiene-theory-part-course-not-given...

PMI institute does not mention anywhere that they are going to ask each and every question from PMBOK. PMI have a big team who frames PMP questions and we cannot ignore the facts that few questions can be based on some standard project management practices that are outside PMBOK.

Now, these “Outside PMBOK” questions would be very few, say less than 5% if at all you are unlucky to find such questions. You can ignore things outside PMBOK if you want to pass PMP exam, however reading some standard project management practices that are outside PMBOK is not a bad deal either.

Saket, PMP