Hey, wait a minute! I can't see any 8, 9, 10, or 11 sharps or flats?
You can quickly learn how many sharps or flats a scale or key signature has: 1 o'clock (G) has 1 sharp, 2 o'clock (D) has two, and so on.Use the free circle of fifths PDF to get an overview of all the 12 tonalities, or key signatures, in major, and if you look at the inner circle, the relative minor!.