Which of the following describes the function of the Louvre when it was first built during the Middle Ages? A public facility that provided entertainment for the masses. A repository for weapons. A meeting place for the leaders of a country. A fortress built for protection.

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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.