It is used by Romans, because they use Roman numerals. In Roman Numerals, x represents ten (10)
It wasn't the Romans that chose X to represent 10 but the Etruscans who invented this system of numeracy. Possibly it stems from the fact that if V is 5 then X is the equivalent of two V's joined together which equals 10.
They didn't because it was the Etruscans that did and presumably it meant a double V (5) which is X (10). The Roman numeral system originated from the Etruscan numeral system and the Etruscans once ruled the Romans.
In our system, based on tens, we add a zero to the end of a number to increase its value by ten. So 1 x ten becomes 10 and 10 times ten becomes 100 etc. We use zeros within numbers to indicate that there are no numbers in that column, so 102 means there is 1 x 100, no x 10s and 2 x units. The Romans had a different system were they used different symbols to denote tens, hundreds and thousands etc. So in Roman numerals 1 x ten is X and X times ten is C. The Romans simply missed out numerals which weren't needed so 102 in Roman numerals was CII (100 + 2). As they didn't add a zero to the end of numbers or use one within numbers they had no need to invent a symbol to represent zero. During the Middle Ages monks, who still wrote in Latin and still used Roman numerals, introduced the numeral N to represent zero (based on the Latin word Nulae, meaning nothing)
The L represents fifty, X represents ten and the I represent one. That means XLIII is the same as 43.
The Roman symbol "X" was used to represent ten because it resembles two "V"s (which stood for five each) placed together. This symbol was part of the Roman numeral system, which used various letters to represent different numbers.
One authority writing on Roman numerals claims that the X represents two V's or fives. If you look at the top and bottom of the X you will see the V which is the numeral for five.
It wasn't the Romans that chose X to represent 10 but the Etruscans who invented this system of numeracy. Possibly it stems from the fact that if V is 5 then X is the equivalent of two V's joined together which equals 10.
They didn't because it was the Etruscans that did and presumably it meant a double V (5) which is X (10). The Roman numeral system originated from the Etruscan numeral system and the Etruscans once ruled the Romans.
In our system, based on tens, we add a zero to the end of a number to increase its value by ten. So 1 x ten becomes 10 and 10 times ten becomes 100 etc. We use zeros within numbers to indicate that there are no numbers in that column, so 102 means there is 1 x 100, no x 10s and 2 x units. The Romans had a different system were they used different symbols to denote tens, hundreds and thousands etc. So in Roman numerals 1 x ten is X and X times ten is C. The Romans simply missed out numerals which weren't needed so 102 in Roman numerals was CII (100 + 2). As they didn't add a zero to the end of numbers or use one within numbers they had no need to invent a symbol to represent zero. During the Middle Ages monks, who still wrote in Latin and still used Roman numerals, introduced the numeral N to represent zero (based on the Latin word Nulae, meaning nothing)
Assuming that Giga is 1 x 109, you can use something such as 10 gigaliters to represent 1 x 1010.
The L represents fifty, X represents ten and the I represent one. That means XLIII is the same as 43.
The L represents fifty, X represents ten and the I represent one. That means XLIII is the same as 43.
The Roman symbol "X" was used to represent ten because it resembles two "V"s (which stood for five each) placed together. This symbol was part of the Roman numeral system, which used various letters to represent different numbers.
The X represents ten and the I represent one. That means 21 is the same as XXI.
The X represents ten and the I represent one. That means XXIII is the same as 23.
As: 10=X, 50=L, 100=C and 1000=M
The answer to the riddle is the letter "X." One "X" represents the Roman numeral for ten (10), two "X's" represent twenty (20), and three "X's" (XXX) is often associated with something naughty or adult-themed.