With 3 darts you cannot hit 169, 172, 173, 175, 176, 178, 179 or anything over 180.
With 2 darts you cannot hit 99, 102, 103, 105, 106, 108, 109 or anything over 110.
With 1 dart you cannot hit 23, 29, 31, 35, 37, 41, 43, 47, 49, 52, 53, 55, 56, 58, 59 or anything over 60.
No numbers can be hit (maximam is 170 on a checkout)
In the game of darts, a bogey number is a score that cannot be achieved with a combination of darts, specifically when aiming to finish a game. The common bogey numbers in standard play are 1, 2, and 3, as they cannot be scored with the standard dartboard configuration. Therefore, there are three bogey numbers in darts.
Darts
6
7
because you use numbers
Hit the inner bull.
Including the bulls eye, the numbers are 1-20.
darts
Around the edge of the dart-board !
infinity
Only in checked baggage; you cannot have them in a carry-on.