How many strings does each ''main string instrument''have?

The main string instruments typically have the following number of strings: a violin has 4 strings, a viola has 4 strings, a cello has 4 strings, and a double bass usually has 4 strings but can also have 5. The harp can have a varying number of strings, commonly around 47. The guitar typically has 6 strings, while the Bass Guitar usually has 4 strings.