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unusual facts about 4-Digits


4-Digits

In Singapore, 4-D draws are conducted every Wednesday, Saturday and Sunday at 1830h (SG/HK Time) at Singapore Pools' main branch at 210 Middle Road.


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0.999...

Joseph Mazur tells the tale of an otherwise brilliant calculus student of his who "challenged almost everything I said in class but never questioned his calculator," and who had come to believe that nine digits are all one needs to do mathematics, including calculating the square root of 23.

Bailey–Borwein–Plouffe formula

The search procedure consists of choosing a range of parameter values for s, b, and m, evaluating the sums out to many digits, and then using an integer relation finding algorithm (typically Helaman Ferguson's PSLQ algorithm) to find a vector A that adds up those intermediate sums to a well-known constant or perhaps to zero.

Benford

Benford's law, which holds that in large sets of data, individual numbers are more likely to start with lower digits

Binary-coded decimal

Some languages (such as COBOL and PL/I) directly support fixed-point zoned decimal values, assigning an implicit decimal point at some location between the decimal digits of a number.

Bit flipping

Bit manipulation, algorithmic manipulation of binary digits (bits)

British Rail Class 489

However, purely for aesthetic purposes, only the last four digits of the set numbers were shown, to fit with the traditional Southern style (maintained until privatisation by British Rail's Southern region) - older (pre-TOPS) units were originally assigned four-digit numbers.

British Rail Class 931

When TOPS class numbers were applied, these units mostly retained their existing numbers as the last three digits of their new TOPS class number.

British Rail Class 933

When TOPS class numbers were allocated, these units retained their existing numbers as the last three digits of their new TOPS class number.

Brun's theorem

The digits of Brun's constant was used in a bid of $1,902,160,540 in the Nortel patent auction.

Colin McClelland

After the release of the first album, Inflammable Material, and the negotiations with Chrysalis for the band's first major recording contract, Colin sold his sixth share in Rigid Digits to the other partners.

Common palmar digital nerves of median nerve

The first of these gives a twig to the second Lumbricalis and runs toward the cleft between the index and middle fingers, where it divides into two proper digital nerves for the adjoining sides of these digits;

Complete game

James Shields threw a total of 11 complete games in the 2011 season for the Tampa Bay Rays, becoming the first pitcher to reach double digits in a single season since CC Sabathia threw 10 complete games for the Cleveland Indians and Milwaukee Brewers in 2008.

Date and time notation in Greece

The minutes are usually written with two digits; the hour numbers are written without a leading zero.

David H. Bailey

More recently (2001 and 2002), Bailey and Richard Crandall showed that the existence of this and similar formulas has implications for the long-standing question of "normality" – whether and why the digits of certain mathematical constants (including pi) appear "random" in a particular sense.

European numerals

Arabic numerals, the most commonly recognised numeral system, consisting of digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9

Gert Verheyen

In 1992 Verheyen signed with Club Brugge KV, where he would remain for the next 14 years, rarely missing a game and netting in double digits in ten of those campaigns, with the side collecting four leagues and two cups.

Hanne Darboven

Soon afterwards her first series of drawings on milimeter paper with lists of numbers, which resulted from complicated additions or multiplications of personally derived numerical sequences based on the four to six digits used to notate the date, month, and year of the standard Gregorian calendar.

Jefferson County, Alabama

Although Alabama as a whole voted for John McCain by double digits in 2008, Barack Obama carried Jefferson County with 166,121 votes (52%) John McCain received 149,921 votes (47%).

Jönssonligan får guldfeber

The film includes a famous scene, where Jönsonligan's leader, Sickan Jönsson, is tied to the digits of a giant clock on the tower of the Stockholm City Hall.

Knobby tire

The markings on the sidewall of a DOT knobby include a DOT code (U.S.) with the last four digits representing the week and year the tire was built, which identifies the tire as street legal.

Machin-like formula

The 2002 record for digits of π, 1,241,100,000,000, was obtained by Yasumasa Kanada of Tokyo University.

Maritime identification digits

Maritime identification digits are used by radio communication facilities to identify their home country or base area in Digital Selective Calling (DSC), Automatic Transmitter Identification System (ATIS), and Automatic Identification System (AIS) messages as part of their Maritime Mobile Service Identities.

Method of complements

The Comptometer had nines' complement digits printed in smaller type along with the normal digits on each key.

North Carolina Democratic primary, 2008

Obama had been under fire for controversial remarks made by Jeremiah Wright, and his lead in North Carolina polls had been reduced to single digits, so Clinton's double-digit loss in that state was a major disappointment.

Peter Borwein

While he was there, he, his brother Jonathan Borwein and David H. Bailey of NASA wrote the 1989 paper that showed a proof for computing one billion digits of π.

Piphilology

The mathematician John Horton Conway composed the following arrangement for the first 100 digits,

Postal codes in Greece

Postal codes beginning with the digits between 100 and 180 are used for the city of Athens; the beginning sequences 180 to 199 are used for other parts of the prefecture of Attica, with the exception of Corfu and Rhodes.

Postal codes in Thailand

The first two digits of the postal code denote the province or special administrative area (e.g. 43120 Phon Phisai, Nong Khai).

Primanti Brothers

In the suit, the plaintiff, Nora Hoxha, claimed that the restaurant's credit card receipts printed all, or if not all, too many digits of a customer's credit card number in violation of the Fair and Accurate Credit Transactions Act.

Seven-digit dialing

This "exchange code protection" made it possible in some low or moderate-density areas to use seven digits to reach areas in another area code (such as Hull from Ottawa before 2006, as every Ottawa-Hull local number originally was reserved in both 613 and 819).

Shannon's law

Shannon–Hartley theorem, any statement defining the theoretical maximum rate at which error-free digits can be transmitted over a bandwidth-limited channel in the presence of noise

Significance

Significant figures or significant digits, the precision of a numerical value

Stardate

According to Roberto Orci, stardates were revised again for the 2009 film Star Trek so that the first four digits correspond to the year, while the remainder was intended to stand for the day of the year.

Telephone numbers in Germany

Exceptions to the 11 digit rule are the four cities of Berlin, Frankfurt, Hamburg and Munich which are the only cities with two digit area codes and require only 10 digit numbers so as not to exceed the maximum length of 8 digits for a subscriber number.

Ustad Mansur

The painting is highly detailed and is presumed to be an Indian chameleon on account of the highly detailed view of the feet of the animal showing each foot exhibiting "fused digits in opposed groups", a lighter band by the edge of the mouth, and a line of white scales on the underside of the belly.

Vanity number

Numbers ending with repeated digits (such as -1111) are heavily advertised by taxi and food delivery companies; the Pizza Pizza chain has trademarked 967-1111, a Toronto local number.

Vehicle registration plates of Europe

On the right one are the two digits of the year when the plate was issued (e.g. "99", "05", "08") and below that there may be an optional two-letter code for the province, such as "MO" for the Province of Modena.

Vigenère cipher

The Gronsfeld cipher is a variant created by Count Gronsfeld which is identical to the Vigenère cipher, except that it uses just 10 different cipher alphabets (corresponding to the digits 0 to 9).

Year 1900 problem

For example, year is recorded only with two digits in Bulgarian Uniform civil number; however, a solution was ready as early as the inception of the system in 1975: 20 was added to the month number for individual born before 1900 and 40 for those born in or after 2000.

Yenko Camaro

The last five digits on the V.I.N. denote the lot numbers assigned for live sale through Barrett-Jackson auctions.


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