#1
1. Prime - the most basic interval, this is simply the same note played consecutively.
2. Major 3rd - this interval contains 2 notes spaced 2 whole steps apart (such as C to E, G to A, etc), and has a familiar uplifting, happy quality.
3. Perfect 5th - this interval spacing is 3 1/2 steps (C to G, G to D, etc). The so called 5-chords (C5, D5, etc) used extensively in rock and roll are based on this interval.
4. Octave - this interval consists of the same two notes played an octave apart.


I don't understand the example given in major 3rd,
how is G 2 whole steps away from A?
#2
Quote by Virtuoso883

I don't understand the example given in major 3rd,
how is G 2 whole steps away from A?


It isn't. The example you were given had a mistake. The major 3rd of G is B.