Actually Edbert, your example of a pentatonic scale is wrong for a major pentatonic scale.
The step interval is whole, whole, whole + 1/2, whole, whole + 1/2.
You indicated an E pentatonic scale is
E, G, B, A, D although in the music world, it is:
E, F#, G#, B, C#, E
PS - Edbert, go back and listen to your Good Charlotte, and give up on understanding music (sorry Kosmo, I couldn't resist)