Some Questions are for Elementary Students

I think trivia crack needs to have levels of difficulty. It's frustrating to get a question such as "Where is the state of Texas located?", with answers being USA, UK, Mexico, Australia. Really? How about the silly math problems, " "Solve 3+(5x2)". Seriously, this is not even trivia, it's math! I understand this game is for all ages, and would be a lot of fun for young children, but what about adults? Is there any possibility of the developers working on getting difficulty levels?