The abacus was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere.

as in the Roman numeral system.

Where the Roman model ( like most modern Japanese ) has 4 plus 1 bead per decimal place, the standard suanpan has 5 plus 2, allowing use with a hexadecimal numeral system.

Around the world, abaci have been used in pre-schools and elementary schools as an aid in teaching the numeral system and arithmetic.

They are descended from the Hindu-Arabic numeral system developed by Indian mathematicians, in which a sequence of digits such as " 975 " is read as a numeral.

It most commonly refers to the numeral system widely used in Europe and the Americas.

The decimal Hindu-Arabic numeral system was invented in India around 500 CE.

The digits 1 to 9 in the Hindu-Arabic numeral system evolved from the Brahmi numerals.

By the middle of the 2nd millennium BC, the Babylonian mathematics had a sophisticated sexagesimal positional numeral system.

In the 10th century, Middle-Eastern mathematicians extended the decimal numeral system to include fractions, as recorded in a treatise by Syrian mathematician Abu ' l-Hasan al-Uqlidisi in 952 – 953.

Fibonacci, a mathematician born in the Republic of Pisa who had studied in Béjaïa ( Bougie ), Algeria, promoted the Indian numeral system in Europe with his book Liber Abaci, written in 1202:

The numeral system employed, known as algorism, is positional decimal notation.

Various symbol sets are used to represent numbers in the Hindu-Arabic numeral system, all of which evolved from the Brahmi numerals.

These artifacts do not always reveal the specific process used for solving problems, but the characteristics of the particular numeral system strongly influence the complexity of the methods.

* Binary numeral system, a representation for numbers using only two digits ( 0 and 1 )

* Radix or base, the number of distinct digits in a positional numeral system

The unit MBtu was defined as one thousand Btu, presumably from the Roman numeral system where " M " stands for one thousand ( 1, 000 ).

Some early digital computers used an electrical model of the common decimal ( base ten ) numeral system to represent numbers internally.

A modern digital computer represents data using the binary numeral system.

The Chinese character numeral system consists of the Chinese characters used by the Chinese written language to write spoken numerals.

The decimal numeral system ( also called base ten or occasionally denary ) has ten as its base.

Decimal notation often refers to a base-10 positional notation such as the Hindu-Arabic numeral system ; however, it can also be used more generally to refer to non-positional systems such as Roman or Chinese numerals which are also based on powers of ten.

Decimal notation is the writing of numbers in a base-10 numeral system.

Band member Antony Brant came up with the band name " V " because V is the Roman numeral for five and there were five members in the band.

An additional supply of numeral types in new colors came out between 1896 and 1901.

As described in the introduction, BCD takes advantage of the fact that any one decimal numeral can be represented by a four bit pattern:

The " X " denotes the Roman numeral " ten ", as this was the tenth such station to be opened by the Secret Intelligence Service.

There are sometimes differences ; for example, the Germans have used " J " instead of " I " for iodine, so the character would not be confused with a Roman numeral.

A number representation ( called a numeral system in mathematics ) specifies some way of storing a number that may be encoded as a string of digits.

Further, on some typewriters, particularly older ones, the unshifted L key had to be used to type the numeral 1.

For instance, the exclamation point, which shares a key with the numeral 1 on modern keyboards, could be reproduced by using a three-stroke combination of an apostrophe, a backspace, and a period.

The last question asked was " If the Roman numeral ' X ' is halved, the result can be represented by which other Roman numeral?

In English, mass nouns are characterized by the fact that they cannot be directly modified by a numeral without specifying a unit of measurement, and that they cannot combine with an indefinite article ( a or an ).

A prefix that indicates an integer, e. g., " bin ", " tern ," or " quatern ", may be used in lieu of a numeral, to produce " binary ", " ternary ", or " quaternary " ( 2, 3, and 4 states respectively ).

In linguistics, a count noun ( also countable noun ) is a common noun that can be modified by a numeral and that occurs in both singular and plural form, as well as co-occurring with quantificational determiners like every, each, several, etc.

It can't be modified by a numeral, occur in singular / plural or co-occur with the relevant kind of determiner.

The sequence of numbers generated by an LFSR or its XNOR counterpart can be considered a binary numeral system just as valid as Gray code or the natural binary code.

" was used ; however, printers later designed a font containing a special symbol of an " lb " with a line through the verticals so that the lowercase letter " l " would not be mistaken for the numeral " 1 ".

The ampersand should not be confused with the Tironian " et " (“⁊”), which is a symbol similar to the numeral 7.

Any non-negative real number can be represented as a base-φ numeral using only the digits 0 and 1, and avoiding the digit sequence " 11 "-this is called a standard form.

A base-φ numeral that includes the digit sequence " 11 " can always be rewritten in standard form, using the algebraic properties of the base φ — most notably that φ + 1

Most guides agree that they always be written with a numeral, as in “ 5 percent ” and not “ five percent ”, the only exception being at the beginning of a sentence: “ Ten percent of all writers love style guides .” Decimals are also to be used instead of fractions, as in “ 3. 5 percent of the gain ” and not “ 3 ½ percent of the gain ”.

Typically, that order would be noun – adjective – numeral – genitive phrase – relative clause – possessive marker – plural marker – case marker, for example / diĝir gal-gal-ĝu-ne-ra / (" god great ( reduplicated )- my-plural-dative " = " for all my great gods ").

Backwards words can be indicated by words like " climbing ", " retreating ", or " ascending " ( depending on whether it is an across clue or a down clue ); letters can be replaced or removed with indicators such as " nothing rather than excellence " ( meaning replace E in a word with O ); the letter I can be indicated by " me " or " one ;" the letter O can be indicated by " nought " or " a ring " ( since it visually resembles one ); the letter X might be clued as " a cross ", or " ten " ( as in the Roman numeral ), or " an illiterate's signature ", or " sounds like your old flame " ( homophone for " ex ").