I called ground on Friday night and requested VFR practice approaches. He told me to "remain at or below 1,500 ft and outside Bravo airspace until further advised, departure freq. 119.4, squawk 8262." I copied it down and read it back to the controller. He advised me that my readback was correct. As I was taxiing out to the runway, I tried to put my squawk code into my transponder and realized that it only goes up to the number seven. I called the controller back and asked him to read the squawk code again. He just started laughing and told me I passed the test and to squawk 5551. I guess they get bored up there!