You have a match and you enter a wagon with a candle, a lamp and a fireplace. which one do you light first?

You would need to light the match before you light anything else.

It depends on what type of third separates the three notes.for example: if you have two mayor thirds is an "aumented chord"if you have two minor thirds is an "diminued chord"if you have one mayor first and then one minor is a "mayor chord"and inverted is a "minor chord"