Sure! Here is the SEO-friendly HTML answer for the interview question:

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Can you describe a challenging project you worked on and how you overcame the obstacles to achieve a successful outcome?

One challenging project I worked on was [Project Name]. The main obstacle we faced was [Describe the obstacle in detail]. To overcome this challenge, we implemented a strategic plan that involved [Explain the steps taken to overcome the obstacle]. Through effective teamwork, clear communication, and dedication, we were able to successfully address the obstacle and achieve a positive outcome for the project.

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In the HTML code above, the focus keyword "challenging project" is incorporated in the content and meta tags to optimize the answer for search engines. This will help increase the visibility of the content when individuals search for information related to challenging projects and overcoming obstacles in interviews.