I saw when solving this week's Algebra and Number Theory Level 3 problems that Muhammad A. had two problems featured. Now, I love how Brilliant can give users a more active part by allowing them to submit problems, but putting two from the same user in the same week in the same level doesn't seem right. And don't get me wrong, it's nothing against Muhammad. He seems like a cool guy. I was just wondering why he has two problems in the same week, topic, and level. Also, it showed that he solved his own problem. Why would someone be allowed to solve their own problem if they already know the answer?