Playing chords on the bass is easy, fun and nice.
We know that a major chord has a formula of 135.
Example in a G major chord, the notes that formed the chord is G B D (135).
G minor will be G Bb D (1 b3 5) and G Dominant will be G B D F (1 3 5 b7).
The 5th is not necessary when playing a bass chord.
The chart below will give you a good introduction of playing chords on bass.
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Have Fun.