G 3/F
The G 3 chord consists of the G (Perfect unison) and B (Major third) notes, with F as the bass note.

How to play the G 3/F chord
- Play F as the lowest bass note in the left hand
- Find G (Root) on the piano keyboard
- Add B (Major third) — 4 semitones above G
- Press all 3 notes simultaneously to sound the G 3/F chord