"official rule) outdated and no longer valid, but many writers still follow it. In Shia Islam, 13 signifies the 13th day of the month of Rajab (the Lunar calendar), which is the birth of Imam Ali. 13 also is a total of 1 Prophet and 12 Imams in the Islamic School of Thought. However, in Sunni Islam, the number 13 bears no symbolic significance. The apparitions of the Virgin of Fátima in 1917 were claimed to occur on the 13th day of six consecutive months. In Catholic devotional practice, the number thirteen is also associated with Saint Anthony of Padua,"
"a tree. An old name for a dartboard is ""butt""; the word comes from the French word ""but"", meaning ""target"". In particular, the Yorkshire and Manchester Log End boards differ from the standard board in that they have no triple, only double and bullseye, the Manchester board being of a smaller diameter, with a playing area of only 25 cm (9.84 in) across with double and bull areas measuring just 4 mm (0.157in.). The London Fives board is another variation. This has only 12 equal segments numbered 20, 5, 15, 10, 20, 5, 15, 10, 20, 5, 15, 10 with"
"man. Distance - the oche (line behind which the thrower must stand) should be 7 ft 9¼ inches (2.37 m) from the face of the board. If the face projects outward from the wall, due to the thickness of the board and/or a cabinet in which it is mounted, the oche must be moved back appropriately to maintain the required distance. The regulations came about due to the United Kingdom and the rest of the world playing at different lengths, with 7 ft 9¼ inches (2.37 m) being the compromised length. The standard dartboard is divided into 20 numbered sections,"
"scoring from 1 to 20 points, by wires running from the small central circle to the outer circular wire. Circular wires within the outer wire subdivide each section into single, double and triple areas. The dartboard featured on the ""Indoor League"" television show of the 1970s did not feature a triple section, and according to host Fred Trueman during the first episode, this is the traditional Yorkshire board. Various games can be played (and still are played informally) using the standard dartboard. However, in the official game, any dart landing inside the outer wire scores as follows: The highest score"
"been used throughout the years and in different geographical locations. Gamlin's layout was devised to penalise inaccuracy. Although this applies to most of the board, the left-hand side (near the 14 section) is preferred by beginners, for its concentration of larger numbers. Mathematically, removing the rotational symmetry by placing the ""20"" at the top, there are 19!, or 121,645,100,408,832,000 possible dartboards. Many different layouts would penalise a player more than the current setup; however, the current setup actually does the job rather efficiently. There have been several mathematical papers published that consider the ""optimal"" dartboard. Initially the missiles were simply"
"is uncolored, the double ring is red, and the outermost triple ring is uncolored. The entire scoring area is bounded by a large out-of-bounds blue ring. The number sequence (20, 1, 18, 4, etc.) is the same as on an English dart board. An ""American"" board is mounted a few inches lower, and a few inches closer, than the more commonly seen ""English"" board. The center of the cork is from the floor. The distance is set at from the ""back"" of the dartboard. This would result in a distance of from the center of the cork to the throw"
"numbers on the board minus the bulls-eye, the numbers 15 through 20 and the bull's-eye, or random number selections. Like with most dart games, 3 darts are thrown each turn per player. If teams are used, turns alternate between opposing players, i.e. Team 1, Player 1 -> Team 2, Player 1 -> Team 1, Player 2 -> Team 2, Player 2, etc. Numbers can be closed in the standard fashion i.e. hitting a single 3 times, hitting a double and a single, hitting a triple, etc. A closing variation, when using only the numbers 1-20, is a single hit on"
"May. The players in bold automatically qualify for the main stage and are seeded. The players in regular text automatically qualify for the main round but are not seed. The players in ""italics"" must go through the qualifiers: World Darts Trophy Merit Table<br> ""1 to 8 on WDT Merit Table can be told based on seedings."" ""9 to 12 on WDT Merit Table can be told based on rest of the automatic qualifiers.""<br> ""Exact order of which players are 9 to 12 is unknown."" Likely BDO / WDF qualifiers or wildcards<br> PDC Order of Merit<br> PDC qualifiers<br> Wildcards<br> The top"
"501 total, in the following way: This eliminates the chance of any dart being deflected by an already thrown dart into the wrong scoring area by throwing each dart at a different location on the board. It is only usually seen in exhibition matches, as in tournaments, players are inclined to aim for the triple 20, only switching to the triple 19 for a cover shot. Arguably the most difficult nine dart finish would be 180 (3xT20), 171 (3xT19), and 150 (3xBULL) – owing to the difficulty of getting all three darts in the bullseye: it is the smallest double"
"the end of the game. Six rounds of darts, the first five are scored at their value (missing the board is 30 points), while the sixth round is one dart that subtracts from the current total. Objective is to be the first team to reach a score of 150, with only 1-12 counting towards a player's score. Doubles and triples of 1-12 still count, though throws must single in and out. Scoring a bullseye (an ice breaker) will put everyone’s score back to zero. Only three ice breakers can be scored per game. Of the two professional organisations, the British"
"the start of their go could miss the double 10 and get a single, miss the double 5 and get a single, leaving them 5 and only one dart remaining. Their best option is to deliberately bust it to get back onto double 10. Under the ""northern bust"" they would remain on 5. A darts match is played over a fixed number of games, known as legs. A match may be divided into sets, with each set being contested as over a fixed number of legs. Although playing straight down from 501 is standard in darts, sometimes a double must"
"barrel of another scores no points at all. It is considered the same as if it missed the board. One notable etiquette difference from traditional ""English"" style darts is that in American Darts, each player leaves the thrown darts in the board for the next player, rather than retrieving them. This is done for several practical reasons: The standard game is Baseball (also known as ""1 to 9""). Players take turns shooting three darts at each inning. They begin with inning number one and continue in order until they have shot nine innings. Darts landing in the thin uncolored outermost"
"− see Dime (United States coin)#Denomination history and etymology. 10 10 (ten) is an even natural number following 9 and preceding 11. Ten is the base of the decimal numeral system, by far the most common system of denoting numbers in both spoken and written language. The reason for the choice of ten is assumed to be that humans have ten fingers (digits). As is the case for any base in its system, ten is the first two-digit number in decimal and thus the lowest number where the position of a numeral affects its value. Any integer written in the"
"[A K Q 10 9], [A K J 10 9], and [A Q J 10 9]; both other no-pair hands (i.e., in which either the A or the 9 are missing) are straights. Consequently, in some variants of the rules, straights are counted as busts. Marlboro once marketed a set of octahedral poker dice that included suits; each die had slightly different numberings, ranging from 7 up to ace. A similar set is currently manufactured by Koplow Games. In 1974 Aurora produced a set of 12 sided poker dice called ""Jimmy the Greek Odds Maker Poker Dice"" and in 2000"
"both the first two darts do not land in any of the 20 numbers). Since the first dart sets the number, players will sometimes shun shooting at the 20, since a small miss will result in either a 1 or a 5 being set as the number. Often two adjacent numbers with solid values, such as 11/14 and 10/15 are chosen by lower-skilled players, since a small miss there does not result is such a large penalty (if you miss the 14 you'll still land in the 11, etc.). The maximum score in an inning is 300 points (3 corks)."
"The total number of different ways of achieving 501 with 9 darts is 3,944, of which 2,296 finish with the BULL, 672 end on D20, 792 on D18, 56 end with D17, 120 finish on D15, and 8 end with D12. The first televised nine dart finish was achieved at the MFI World Matchplay on 13 October 1984 by John Lowe, who used the third method (with the T17 first, then T18, D18) above as his outshot after scoring two maximum 180s. For this he received a prize of £102,000, and he went on to win the whole event. This"
"the left of the bullseye at σ = 100. Where σ may refer to the standard deviation for a specific population: List of darts players. There are many games that can be played on a dartboard, but the term ""darts"" generally refers to a game in which one player at a time throws three darts per visit to the board. The throwing player must stand so that no portion of his/her feet extends past the leading edge of the oche, but may stand on any other portion and/or lean forward over it if desired. The most common objective is to"
"10 10 (ten) is an even natural number following 9 and preceding 11. Ten is the base of the decimal numeral system, by far the most common system of denoting numbers in both spoken and written language. The reason for the choice of ten is assumed to be that humans have ten fingers (digits). As is the case for any base in its system, ten is the first two-digit number in decimal and thus the lowest number where the position of a numeral affects its value. Any integer written in the decimal system can be multiplied by ten by adding"
"may be interpreted as 10 in this situation. A fairly consistent arrangement of the faces on ten-digit dice has been observed. If one holds such a die between one's fingers at two of the vertices such that the even numbers are on top, and reads the numbers from left to right in a zigzag pattern, the sequence obtained is 0, 7, 4, 1, 6, 9, 2, 5, 8, 3, and back to 0. The even and odd digits are divided among the two opposing ""caps"" of the die, and each pair of opposite faces adds to nine. When casting a"
"the doubles and trebles being a quarter of an inch (6.35mm) wide. There is a speculation that the game originated among soldiers throwing short arrows at the bottom of a cask or at the bottom of trunks of trees. As the wood dried, cracks would develop, creating ""sections"". Soon, regional standards emerged, and many woodworkers supplemented bar tabs by fabricating dart boards for the local pubs. It is generally said that the standard numbering plan with a 20 on top was created in 1896 by Lancashire carpenter Brian Gamlin, though this is disputed. However, a great many other configurations have"
"3 left to right. These weighted digits are added together. The check digit is the integer between 0 and 9 that makes the sum a multiple of 10. For instance, for the item with ISMN beginning 979-0-060-11561: As 85 mod 10 = 5, the check digit is 10 - 5 = 5 and the full number is 979-0-060-11561-5. For another example, Robert Fripp's collection of Guitar Craft scores has the ISMN 979-0-9016791-7-7. Given first 12 digits 979-0-9016791-7, the ISMN algorithm evaluates which implies that the check digit is indeed 7 (because 123+7=130=13x10). International Standard Music Number The International Standard Music"
"labeled with the numbers 0-9 twice to use for percentages instead. Subsequent patents on ten-sided dice have made minor refinements to the basic design by rounding or truncating the edges. This enables the die to tumble so that the outcome is less predictable. One such refinement became notorious at the 1980 Gen Con when the patent was incorrectly thought to cover ten-sided dice in general. Ten-sided dice are commonly numbered from 0 to 9, as this allows two to be rolled in order to easily obtain a percentile result. Where one die represents the 'tens', the other represents 'units' therefore"
"bounce off from hitting the steel. The scoring areas on an American Darts board are also laid out differently from an English board. The center bullseye (or cork) on an American board is one section; there is no ""inner"" and ""outer"" bullseye. Additionally, unlike the English board, the treble ring is not halfway between the outer edge and the bullseye; rather triple is itself on the outer edge, and the double ring is directly adjacent to it, just inside the triple ring. The remainder of the board is the single scoring area. The bullseye is colored red, the single area"
"""zuboshi"". In darts it is 5 foot 8 inches (1.73m) above the floor. Before the start of a match players usually throw closest to the bull to decide who has the advantage of throwing first. An inner bullseye (sometimes referred to as a ""double bullseye"" in amateur play) is a smaller, inner circle and counts for 50 points while an outer bull is worth 25 points. Two treble 20s when combined with an inner bullseye is worth 170 points in darts which is the second highest possible checkout. In the World Grand Prix, which has a double start format, an"
"reduce a fixed score, commonly 301 or 501, to zero (""checking out""). The final dart must land in either the bullseye or a double segment in order to win. A game of darts is generally contested between two players, who take turns. Each turn consists of throwing three darts. When two teams play, the starting score is sometimes increased to 701 or even 1001; the rules remain the same. A throw that reduces a player's score below zero, to exactly one, or to zero but not ending with a double is known as ""going bust"", with the player's score being"
"possible with three darts is 180, commonly known as a ""ton 80"" (100 points is called a ton), obtained when all three darts land in the triple 20. In the televised game, the referee frequently announces a score of 180 in exuberant style. A ""quad"" ring appeared briefly between the triple ring and the bull in the 1990s, leading to a potential ""240"" maximum (three quad-20s), a ""210"" maximum checkout (Q20-Q20-Bull) and ""seven"" dart finishes from a 501 start (five quad-20s, triple-17, bullseye), but was swiftly dropped from professional tournament play after only two years. One make of this board"
"9 and must be such that the sum of all the thirteen digits, each multiplied by its (integer) weight, alternating between 1 and 3, is a multiple of 10. Formally, using modular arithmetic, we can say: The calculation of an <nowiki>ISBN-13</nowiki> check digit begins with the first 12 digits of the thirteen-digit ISBN (thus excluding the check digit itself). Each digit, from left to right, is alternately multiplied by 1 or 3, then those products are summed modulo 10 to give a value ranging from 0 to 9. Subtracted from 10, that leaves a result from 1 to 10. A"
"Cricket (darts) Cricket is a darts game that uses the standard 20 number dartboard with the triple and double rings. It is known by various names in Britain, including ""Mickey Mouse"", ""Tactics"" ""Horse and Carriage"", ""Coach and Horses"", ""The Game"", ""Faldo"", ""Beds and Bulls"", ""Oscar Boscar"" and ""Pointy Throwies"". Cricket is typically played between 2, 3 or 4 players, or teams of players, although the rules do not discount more players. The goal of cricket is to be the first player to open or close all the cricket numbers and have a higher or even point total. Cricket uses the"
"in 2016), and ""bullseye"" for £50 (from the points value of the bullseye on a darts board) . £5 is called a ""fiver"". A ""tenner"" is £10. A ""Darwin"" also refers to a £10 note, due to the image of Charles Darwin on the back. £20 is commonly referred to as a “score”. A ""pony"" equals £25. A ""bullseye"" is £50. £100 is commonly referred to as a ""ton"" e.g. £400 would be called 4 ton. Also, a ""century"" or a ""bill"" are also used as £100 (e.g. £300 would be three bills). A ""monkey"" is £500. £1,000 is commonly"
"Checkerboard A checkerboard (American English) or chequerboard (British English; see spelling differences) is a board of chequered pattern on which draughts (checkers) is played. Most commonly, it consists of 64 squares (8×8) of alternating dark and light color, often black and white. An 8×8 checkerboard is used to play many other games, including chess, whereby it is known as a chessboard. Other rectangular square-tiled boards are also often called checkerboards. Given a matrix with formula_1 rows and formula_2 columns, a function formula_3, formula_4 returns true if the cell is white and false if the cell is black. The element formula_5"
"7 inches distant from the rail and 14 inches parallel to the rail; simple, but placing the chuck nurse out of reach. The new restriction was instituted for a 1914 tournament, the first in 14.1 balkline, specifically to curtail the chuck nurse. Over its history balkline has had many variations including 8.2, 10.2, 12.2, 12½.2, 13.2, 14.1, 14.2, 18.1, 18.2, 28.2, 38.2, 39.2, 42.2, 45.1, 45.2, 47.1, 47.2, 57.2 and 71.2 balkline. In its various incarnations, balkline was the predominant billiards discipline from 1883 to the 1930s when it was overtaken by three cushion billiards and pocket billiards. Balkline is"
"target count as two marks in one throw, and on the triples ring as three. Once opened in this manner, until the opponent ""closes"" that number with three marks on it of their own, each additional hit by the owner/opener scores points equal to the number of the target (which may also be doubled and tripled, e.g. a triple-20 is worth 60 points). The outer bullseye counts as 25 points, and the inner as 50. Dartball is a darts game based on the sport of baseball. It is played on a diamond shaped board and has similar scoring to baseball."
"number 13. To the right of the radix point is 101, which is the binary representation of the decimal fraction 625/1000 (or 5/8). Radix point In mathematics and computing, a radix point (or radix character) is the symbol used in numerical representations to separate the integer part of a number (to the left of the radix point) from its fractional part (to the right of the radix point). ""Radix point"" applies to all number bases. In base 10 notation, the radix point is more commonly called the decimal point, where the prefix deci- implies base 10. Similarly, the term ""binary"