New PMP Question & Answers with explanation

One key characteristic of adaptive lifecycles, such as the agile approach for product development, is that product features are developed using:
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Which of the following is not a tool and technique of the Collect Requirements process?
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Which of the following is an example of rolling wave planning in a project following an adaptive life cycle?
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Which of the following are short, textual descriptions of required functionality often developed during a requirements gathering workshop:
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The banks in the Ukraine have raised the annual interest rates sharply to 30 percent. You have the option to invest your money either in Ukrainian banks or to build a small factory for a client. The total cost of building the factory will be $12 million but it will spread evenly over one year ($1 million payable by the end of each month for the next 12 months). The client will make a payment of $3.9 million at the end of each quarter from the start of the project. Which of the following is the best option (if you are only considering the return on investment)?
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