Compare the realists to the impressionist

A key difference in style between the Realists and Impressionists was that whilst the Realists focused more on the detail of their subject matter, the Impressionists were intent on capturing the most fleeting aspects of nature – especially the changing light of the sun.

Explanation:

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.