Quora seems to be a question/answer site, but browsing through the website, I don't see any way to ask questions at all:
I don't have a "Write Menu" which Robert seems to have.
How do we ask a question on Quora?
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To add a question generally, type your question into the "Search Questions, Topics, and People" bar at the top of the page, then click on "Add Question." A dialog will appear asking for question details and privacy settings. Once you are done filling those out, click "Add Question" in the dialog to submit the question.
You can also add questions from a topic page. Find the bar that says "Find or Add a Question." When you click the "Add" button from that bar, again a dialog will appear asking for question details and privacy settings. Click "Add Question" to submit the question.
You can also go to https://www.quora.com/question/add directly.