This depends on what you mean by "how many".
If you mean how many individual pieces of string are used when stringing a racket the number would probably be one or two pieces.
If by how many you wish to know the number of times the strings cross the head or the racket, the answer would vary by racket. The number of times the strings cross is called the "string pattern". To know this information you would have to look on the racket, probably around the throat and look for a number that looks something like "16x18" that means that there are 16 crosses and 18 mains. (Crosses span the narrower part of the head and can be described as running horizontally. The mains span the longer part of the head and are can be described as running vertically.)
Usually, a guitar has six strings.
Some have twelve, but they are paired with some being the same as others.
There are other numbers of strings used for Guitars, but not commonly.
There are 6 strings on a guitar. 3 low sounded ones and 3 high sounded ones.
the strings on a base guitar are the same as the top four strings on a guitar which are E A D G
there are six strings on a guitar
That depends on the guitar! On a Tenor guitar there are four strings, on a standard guitar there are six strings, and there are twelve strings on a twelve string guitar.
There are fours strings.
6 strings like a regular guitar
There are 6 strings on a folk guitar as with most guitars, except for 12 strings.
A standard classical guitar has 6 strings.
6 strings
A blues guitar has the same amount of strings as any other guitar: 6
The electric guitar has 6 strings tuned to E A D G B E
Only 6 strings.
Guitar strings are made of many different substances. One of the most common is metal. Often a bass guitar will have copper-bound steel strings.