I recently had two interviews that had similar questions on the written test. They were both multiple choice. The question asked about airspeed in class b airspace. The choices were 250, 230, and 200. Now, I obviously chose 250, but that question always bugs me. 91.117 nor anywhere else in the regs states that there is an airspeed for class b airspace. Given most class b airspaces are 10,000 feet and below, but not all (Atlanta, Denver). Do most people truly believe that there is a regulation about airspeed in class b airspace? If there is a regulation stating that, please enlighten me. I am familiar with the speeds below class b and vfr corridors. Thanks and maybe I will learn something.