For a score to count, the tip of the dart must be touching the dart board.
A dart board uses the force of impact from a dart hitting its surface to lodge the dart into the board. The force required is enough to pierce the board's material and remain securely in place.
First you need to buy or build a dart board cabinet. When you hang the dart board cabinet you want to make sure that when you put the dart board inside the bullseye is 5' 8" high.
The standard dart board does not have alternative odd and even numbers. The dart board is set up to encourage accuracy by penalising poor shooting. An excellent site for the mathematical probabilities is http://www.maa.org/mathland/mathland_5_19.HTML
Between 7 and 8 on a dart board is 16.
Go to "Why are the dart numbers arranged the way they are".
20.
Facilities for darts are in may bars, pubs and clubs and there is 7-feet between the dart board and the toe line. The equipment needed for darts includes a numbered dart board and darts.
a profesional dart can be up to 30 lbs Edit: Assuming you are talking about the dart board game, the professionals on average use from 18 to 23 gram darts. Some use lighter and some use heavier. I use 26 gram darts as does Phil Taylor. It all comes down to what you're comfortable with. So, if this is for the dart board game, there is no such thing as 30lb darts.
there i no exact place you can find a dart board the objects you find on a walk are randomised to different places every time, hope that helps
20 numbers
Diana ross