What questions will you ask freelancers before hiring them for a task?

[Btaliat]

You just don't hire a freelancer as a client. You need to make sure that you are convinced enough. And what can make you convinced? There is a need to ask some certain questions, at least to clear the doubts that you may have. First, you may ask how competent are they about the tasks, and even go as far as asking for their last completed tasks. Ask about their payment option and when they are likely to finish the tasks. What other questions do you think?