Banjo Emaj7 chord (Open G)E major seventh on the 5-string banjo: 2 1 0 1, and 4 more shapes

Frets, string 4 to string 1: 2 1 0 1 (open position)

1. String 4 (D): 2nd fret, ring finger, E
2. String 3 (G): 1st fret, index finger, G♯
3. String 2 (B): open, B
4. String 1 (D): 1st fret, middle finger, D♯
5. String 5, the short g: open, G, not in the chord

Sounds: E G♯ B D♯  ·  Emaj7 is E, G♯, B, D♯ (1 · 3 · 5 · 7)

The 5th string: the short g rubs against the G♯ in this shape, a semitone away: some players let it ring, some skip it.

Open G tuning: gDGBD, the short 5th string first, then strings 4 to 1.