Answer:
There are seven notes in the Major scale and seven intervals between them. This pattern is: When this pattern is used to extract notes from the Chromatic scale, we arrive at the Major scale.
Explanation:
Adding the semitone interval sizes together (2+2+1+2+2+2+1) gives a total of 12, the number of semitones in a octave. This is also true for every other (non-Major) scale type.
Thank you so much!