Now im playing an A-Powerchord, but not with the ocatve. i played the 7 step of the a major scale instead of the octave.

is this a A5 add7 chord?
cause the a major scale is: A B C# D E F# G# A
and if i use A E and G# it must be a 7th chord?
it confused me cause i dont use a third.
thanks for help!
