Maybe 4
I'm probably gonna be super off.
A many shades of one color
Answer:
Determine size (by counting lines and spaces between the notes)
Determine if the top note is in the major scale of the bottom note.
If it is: the interval is perfect (if it is a unison, fourth, fifth, or octave) or it is major (if it is a second, third, sixth, or seventh)
Really easyake derivative of x the integrate
just t