{"count":2,"questions":[{"id":14,"category":"math","difficulty":"medium","question":"What is the sum of angles in a triangle?","answer":"180 degrees","choices":["180 degrees","90 degrees","360 degrees","270 degrees"]},{"id":13,"category":"math","difficulty":"medium","question":"What is the derivative of x²?","answer":"2x","choices":["2","2x","x","x²"]}]}