New PMP Question & Answers with explanation

Why is assessing risk probability in the Perform Qualitative Risk Analysis process difficult?
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You are a project manager working within a division that recently experienced a reorganization. Your new manager will now step in as the sponsor of your existing project. She asks for a briefing on the timeline of outcomes yielded by the project that will provide value to the department. What is she describing?
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When working in the Conduct Procurements process, you might consider asking the vendor to supply you with an ink sample for a project on which you’re working. The ink must have special qualities (they were outlined in the RFQ), and before making a selection, you want to test the ink in the printers that will be used at project deployment. All of the following statements are true except for which one?
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Which of the following scheduling methods does Kanban use?
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Which of the following should you consider when selecting a life-cycle methodology?
Select three