If one scans topic and pages of leonardo da vinci's, it becomes apparent that he is a? a. intended to publish at least some of them. b. was highly organized and keeping his notes. c. kept them strictly for his own use

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.