What is ordinal number
What are Ordinal Numbers? Definition, List, Examples, Facts
What are Ordinal Numbers?
Numbers that are used to represent the rank or position of an object or a person are known as ordinal numbers. They are also referred to as positioning or ranking numbers.The sequence of ordinal numbers vary on the parameters that are based on the positions that are defined, such as weight, height, marks, size, etc. Such numbers are also known as ordinals.
How to Write Ordinal Numbers?
Ordinal numbers or ordinals are written using numerals as prefixes and adjectives as suffixes.
For example, 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th and so on. We can easily identify an ordinal number: it talks about positioning.
So, if we were to say, “Bring me the bottle of jam that is lying on the 4th shelf.”, one would know that the ordinal number here is 4, which informs us about the position of the jam bottle.
The above picture shows different floors of a building. Here, we can use ordinal numbers to define the position of the floors.
The numbers 1st (first), 2nd (second), 3rd (third), 4th (fourth), 5th (fifth), 6th (sixth), 7th (seventh), 8th (eighth), 9th (ninth) and 10th (tenth) tell us about the positions of various floors in the building. Therefore, all of them are the ordinal numbers.
Applications of Ordinal Numbers
Ordinal numbers are a great way to talk about the order of something. For example, the order of dates. These numbers are only used when data is provided and the data is to be arranged in order.
For example: Someone who has performed well throughout the year may get the chance to be valedictorian. They would be first in line. But someone who performed well, but was unable to score as much as the person before in various tests and exams, may be second in line to be valedictorian. The person who has not performed well at all, has the least amount of chance.
The picture given below shows some athletes competing in a 500m race. We can also use ordinal numbers to define their positions in order to see who the winner and runnersup of the race are.
Other examples of ordinal numbers are as follows:
 Jennifer always ranks 2nd in the class.
Here 2nd is the ordinal number that tells you about the position that Jennifer has secured.
 Jane is standing at the 5th place in the queue.
Hereby the ordinal number is 5th, we understand Jane’s position in the queue.
 Jenny came 3rd in the race.
Here, 3rd is the ordinal number which tells you about the place that Jenny has secured in the race.
 The 10th table is reserved.
Here, the ordinal number 10th refers to the number of table reservations made.
Ordinal Numbers 1
– 50 listOrdinal Numbers 51
–100 listOrdinal Numbers v. Cardinal Numbers
The type of numbers that are used for counting the number of objects or persons are known as cardinal numbers. This type of numbers are used for representing the cardinality of the number of elements in a set.
Cardinality means to know about the number of elements in a set.
Cardinal numbers can be the natural numbers that we use while we are counting like one, two, three, four, five and so on.
On the other hand, ordinal numbers are used to determine the rank or position of any object or person. We write ordinal numbers using numbers as prefixes and adjectives as suffixes.
Let us understand the difference with the help of an example.
Some students were asked to collect marbles.
Tom collected 1, Jane collected 2, and Clove collected 3 marbles.
Here the numbers 1, 2, 3 are cardinal numbers as they represent the quantity of marbles.
Now, the one who scores maximum wins. So, Clove stands 1st, Jane stands 2nd and Tom stands 3rd.
Here the numbers 1st, 2nd and 3rd are ordinal numbers as they represent the position of the students.
Ordinal Numbers v. Nominal Numbers
A set of numbers that are used for labeling certain items or places so that they can be identified easily are known as nominal numbers. Whenever we have to identify an object uniquely, we use nominal numbers. These numbers are not of much use because they are just going to give information about location and not about its quantity, quality, etc. Nominal numbers can be used as area codes, on number plates of vehicles, etc. Operations such as addition, subtraction, multiplication and division are meaningless on nominal numbers.
For example: In a phone number like 202 5886500, the number is a nominal number. Even if we apply an operation, it will not give us anything meaningful.
On the order hand, the ordinal numbers tell us about the rank or position of any object or person.
For example: Sophia lives in the 34th house on San Pablo Avenue, California.
Fun Fact!
11, 12 and 13 are the only numbers to use a suffix ‘–th’ but all other numbers ending with 1 use ‘–st’, those ending with 2 use ‘–nd’ and those ending with 3 use ‘–rd’.
Solved Examples
Example 1: Which English alphabet is 12th from the beginning?
Solution: The alphabet that is 12th from the beginning is L.
Example 2: Kim, Kethy, Kiah and Kaina are sitting in the line in alphabetical order. What is the position of Kiah from the beginning?
Solution: According to alphabetical order, the order in which they’re sitting would be: Kaina, Kethy, Kiah, Kim. So, Kiah is at the 3rd position.
3. Christmas lies on the _____ of December. Solution: Christmas lies on the 25th of December.
Practice Problems
The vehicle number of Sarah is KL23AB89.
There are 9 apples on the tree.
Catheline came 4th in the drawing competition.
None of these
Correct answer is: Catheline came 4th in the drawing competition.
In the option C, the number 4th is telling about the position of Catheline in the drawing competition.
51
51st
51th
51rd
Correct answer is: 51st
The ordinal number for 51 for 51st.
M and O
M and N
P and I
E and O
Correct answer is: P and I
The fourth letter is P and the tenth letter is I.
Frequently Asked Questions
Is 0 an ordinal number?
No, we cannot write 0 as an ordinal number.
What are exceptional ordinal numbers?
Exceptional ordinal numbers are the ordinal numbers that do not end with th. For example: 1st (first), 2nd (second), 3rd (third), etc.
Who invented ordinal numbers?
Ordinal numbers were invented by Georg Cantor in 1883.
Ordinal Numbers  Meaning, Examples
Ordinal numbers are the numbers that talk about the position of objects. For example, 'The cookies are kept in the 3^{rd} drawer from the top', 'The orange dress is the 7^{th} one from the right', 'The soccer ball is kept in the 3^{rd} carton from the left'. All these sentences have one thing in common  they talk about the positions of the objects. This is the main element in the discussion of ordinal numbers.
1.  What are Ordinal Numbers? 
2.  Difference Between Cardinal and Ordinal Numbers 
3.  List of Ordinal Numbers from 1 to 100 
4.  FAQs on Ordinal Numbers 
What are Ordinal Numbers?
An ordinal number is a number that indicates the position or order of something in relation to other numbers, like, first, second, third, and so on. This order or sequence may be according to the size, importance, or any chronology. Let us understand the ordinal numbers with an example. Ten students participated in a contest. Out of them, the top winners were given medals and were ranked as 1^{st}, 2^{nd}, and 3^{rd}. In this case, the positions: 1^{st}, 2^{nd}, and 3^{rd} are ordinal numbers.
Difference Between Cardinal and Ordinal Numbers
A cardinal number is a number that denotes the count of any object. Any natural number such as 1, 2, 3, etc., is referred to as a cardinal number, whereas, an ordinal number is a number that denotes the position or place of an object. For example, 1^{st}, 2^{nd}, 3^{rd}, 4^{th}, 5^{th}, etc. Now, if we say, 'There are 3 ants and 5 bears'. This is an example of cardinal numbers. However, if we say, 'The position of the runners in the running event is first, second, third, and so on', this represents ordinal numbers. Observe the table given below to note the difference between cardinal numbers and ordinal numbers.
List of Ordinal Numbers from 1 to 100
The list of ordinal numbers from 1 to 100 can be learned easily and is quite helpful for specifying the order of any given object. You can use the combinations from this list to find out the ordinal numbers from 100 onward. Observe the table given below in order to understand how ordinal numbers are written. You might be able to pick up a pattern after referring to the first twenty ordinal numbers.
1st: First  21st: TwentyFirst  41st: FortyFirst  61th: SixtyFirst  81st: EightyFirst 
2nd: Second  22nd: TwentySecond  42nd: FortySecond  62nd: SixtySecond  82nd: EightySecond 
3rd: Third  23rd: TwentyThird  43rd: FortyThird  63rd: SixtyThird  83rd: EightyThird 
4th: Fourth  24th: TwentyFourth  44th: FortyFourth  64th: SixtyFourth  84th: EightyFourth 
5th: Fifth  25th: TwentyFifth  45th: FortyFifth  65th: SixtyFifth  85th: EightyFifth 
6th: Sixth  26th: TwentySixth  46th: FortySixth  66th: SixtySixth  86th: EightySixth 
7th: Seventh  27th: TwentySeventh  47th: FortySeventh  67th: SixtySeventh  87th: EightySeventh 
8th: Eighth  28th: TwentyEighth  48th: FortyEighth  68th: SixtyEighth  88th: EightyEighth 
9th: Ninth  29th: TwentyNinth  49th: FortyNinth  69th: SixtyNinth  89th: EightyNinth 
10th: Tenth  30th: Thirtieth  50th: Fiftieth  70th: Seventieth  90th: Ninetieth 
11th: Eleventh  31st: ThirtyFirst  51st: FiftyFirst  71st: SeventyFirst  91st: NinetyFirst 
12th: Twelfth  32nd: ThirtySecond  52nd: FiftySecond  72nd: SeventySecond  92nd: NinetySecond 
13th: Thirteenth  33rd: ThirtyThird  53rd: FiftyThird  73rd: SeventyThird  93rd: NinetyThird 
14th: Fourteenth  34th: ThirtyFourth  54th: FiftyFourth  74th: SeventyFourth  94th: NinetyFourth 
15th: Fifteenth  35th: ThirtyFifth  55th: FiftyFifth  75th: SeventyFifth  95th: NinetyFifth 
16th: Sixteenth  36th: ThirtySixth  56th: FiftySixth  76th: SeventySixth  96th: NinetySixth 
17th: Seventeenth  37th: ThirtySeventh  57th: FiftySeventh  77th: SeventySeventh  97th: NinetySeventh 
18th: Eighteenth  38th: ThirtyEighth  58th: FiftyEighth  78th: SeventyEighth  98th: NinetyEighth 
19th: Nineteenth  39th: ThirtyNinth  59th: FiftyNinth  79th: SeventyNinth  99th: NinetyNinth 
20th: Twentieth  40th: Fortieth  60th: Sixtieth  80th: Eightieth  100th: Hundredth 
Ordinal Numbers 1 to 20
Ordinal numbers from 1 to 20 are different from the rest. After the number 20, a repeated pattern of ordinal numbers can be observed. Ordinal numbers from 1 to 20 can be listed as follows. 1  First, 2  Second, 3  Third, 4  Fourth, 5  Fifth, 6  Sixth, 7  Seventh, 8  Eighth, 9  Ninth, 10  Tenth, 11  Eleventh, 12  Twelfth, 13  Thirteenth, 14  Fourteenth, 15  Fifteenth, 16  Sixteenth, 17  Seventeenth, 18  Eighteenth, 19  Nineteenth, 20  Twentieth.
☛ Related Topics
 Cardinal Numbers
 Ordinal Numbers Worksheets for Kindergarten
 Numbers
 Rational Numbers
 Prime Numbers
 Composite Numbers
 Even Numbers
 Odd Numbers
 Real Numbers
 Natural Numbers
 Irrational Numbers
 Counting Numbers
Ordinal Numbers Examples

Example 1: What is the 3rd letter in the word: SUMMERS?
Solution:
In the given word, SUMMERS, the first letter is 'S'. The second letter is 'U'. Similarly, we count the position of the letters in order, like, first, second, third, and so on which denotes ordinal numbers. So, we can see that the letter 'M' comes in the 3rd position. Therefore, the third letter in the given word is 'M'.

Example 2: Sam, Jenny, Mary, and Jack are standing in a queue in the given order. Who is in the fourth position?
Solution:
From the given information, we can say that: Sam is in the first place, Jenny is in the second place, Mary is in the third place, and Jack is in the fourth place. Therefore, Jack is standing in the fourth position. Here, 4th is an ordinal number because it denotes the position of Jack.

Example 3: State true or false with respect to ordinal numbers.
a.) An ordinal number is a number that denotes the position or place of an object.
b.) Ordinal numbers are written as 1^{st}, 2^{nd}, and 3^{rd}, and so on.
Solution:
a.) True, an ordinal number is a number that denotes the position or place of an object.
b.) True, ordinal numbers are written as 1^{st}, 2^{nd}, and 3^{rd}, and so on.
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Practice Questions on Ordinal Numbers
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FAQs on Ordinal Numbers
What Does Ordinal Number mean?
Ordinal numbers are the numbers that specify the position of objects. For example, when we say that the books are kept on the 3^{rd} shelf, here 3rd is an ordinal number. Similarly, first, second, twentieth, fiftieth, and so on are ordinal numbers.
What is the Difference Between Cardinal and Ordinal Numbers?
Cardinal numbers denote the count of any object. For example, natural numbers like 1, 2 3, and so on are cardinal numbers. On the other hand, ordinal numbers denote the position or place of an object. For example, 1^{st}, 2^{nd}, 3^{rd}, 4^{th}, 5^{th}, and so on, are ordinal numbers.
How to Write Dates with Ordinal Numbers?
Ordinal numbers are used to mention the dates in English. For example, if we need to write the date of Christmas, we write the month and then the ordinal number of the day. In this case, we say that Christmas is on December 25th. Here, 25th is an ordinal number.
Is Zero an Ordinal Number?
No, 0 cannot be considered an ordinal number. Specifying the position of anything as 0^{th} or zeroth does not give a logical explanation.
How to Write Ordinal Numbers?
Ordinal numbers have a suffix added at the end. They can be written as first, second, third, and so on when expressed in words. When ordinal numbers are expressed as numerals, the last two letters of the words are added to the respective numbers, like, 1^{st}, 2^{nd}, 3^{rd}, 4^{th}, and so on.
Why do we use Ordinal Numbers?
We use ordinal numbers for specifying the position or order of something. For example, the pens are kept in the 3^{rd} drawer from the top, or, Ria stays on the second floor of the apartment. Here, the respective numbers specify the position or order of the object or people, whatever the case may be.
What are Ordinal Numbers From 1 to 10?
The ordinal numbers from 1 to 10 are as follows: 1st: First, 2nd: Second, 3rd: Third, 4th: Fourth, 5th: Fifth, 6th: Sixth, 7th: Seventh, 8th: Eighth, 9th: Ninth, and 10th: Tenth.
What is the Ordinal Number of 1?
The ordinal of 1 is written as First. In the numeral form, it is represented as 1^{st}.
Download FREE Study Materials
Worksheets on Ordinal Numbers
Serial number on the sleeve  You can’t understand Korea with the mind ...  LiveJournal
credit card, pinkishbrownish color with the symbols of Korea. This card contains basic information about its owner: name (in Korean alphabet and hieroglyphs, if the name is hieroglyphic), date of birth, place of residence. On the reverse side there is a fingerprint and a name written in Latin letters. It does not have an expiration date, the card is given once and for all, although in practice its replacement still occurs from time to time: cards are lost, crumpled, bent, etc.
The most important and valuable information on this card is undoubtedly the citizen's account number itself  the most important number in the life of a South Korean, which is given to him at birth and does not change until his death. It consists of 13 digits and two parts: the first six digits are the date of birth of the person (the last two digits of the year of birth, month and day), then through a hyphen  the actual number. The first digit determines the gender of the person: for men, numbers start with one, for women  with two. For example, the abstract number will look like 8503262123456: we can immediately find out from this number that this number belongs to a woman who was born on March 26, 1985 years, the remaining five digits are already a serial number for administrative purposes. The number of the internal registration card must also be indicated in the passport, which Koreans use when traveling abroad.
Alien registration card (외국인등록증, Alien Registration Card) is also issued to foreigners living in Korea, although they are called differently. Card numbers for foreigners are issued according to the same logic as numbers for Koreans: six digits of the date of birth plus the number itself. However, in order to distinguish the numbers of Koreans from the numbers of foreigners, they were given different numbers to indicate gender: male foreigners are denoted by five, women by six.
As I said, the registration number is the most important number for a Korean, no one ever tells it to anyone, because absolutely everything is done with this number in Korea: from registering on Korean shopping mall sites to obtaining a mortgage loan from a bank . Knowing the registration number, you can get absolutely all the information about a person: his address, phone number, bank account number, all information about his housing, property, taxes, income, work, etc. Therefore, of course, no one ever discloses this number, and all organizations that require it are required to keep this information in the strictest confidence.
However, technology is also a technique to let people down from time to time  in March of this year, the largest leak of personal information in the history of Korea of more than 20 million Koreans occurred (this is almost half of the country's population, if anything). All the data of the clients of the largest Korean banks, including the numbers of these internal cards, turned out to be freely available on the Internet. The commotion rose unchildish, because in fact all the honest people were opened all the financial information of half the population of the country. The Koreans immediately rushed to these same banks in a hurry to change all bank cards, close old accounts and open new ones, withdraw money from mutual funds, in general, cover their financial tracks in every possible way, until the scammers had time to take advantage of the golden chance that had fallen on them from the sky. According to my friend, who works at one of the banks where the leak occurred, they worked on those days from 7 am to 11 pm, although the bank's usual working hours for customers are from 9up to 4.
Despite the fact that there was no strong surge in financial fraud during this period, experts warn that the main consequences for citizens whose information has become public is likely to come: according to them, in terms of scammers, it would be much more reasonable to wait until all this hype subsides, and somewhere in a year or two to start your dark business. And they have a lot of room for activity: having all the information about a person in their hands, and, in particular, their civil registration number, you can easily, for example, get a loan in his name, since loans for small amounts in Korea can be obtained without leaving from home, directly on the phone. Imagine such a "surprise": you live, all so happy with life, and suddenly bam, they call you from the bank and say, well, when will you return the loan? You make round eyes, they say, what kind of loan, what are you talking about, for the first time I hear, there was nothing like that. And you, well, how is it, here, in your name, they took 20 thousand dollars, to your registration number, all honor upon honor ... Let's face it, it will not be a very pleasant embarrassment for you. And criminals have many similar ways to bring you a lot of trouble, just knowing your citizen number is enough.
That is why the government is seriously concerned about this problem and proposed a reform of the registration of citizens. At the moment, the process is in the process of developing possible solutions to the problem after the completion of preliminary studies. In general, lawmakers propose six possible solutions, which will still be submitted for consideration to various authorities and which will have to be discussed with all parties involved in this process. In particular, they offer:
 issue new numbers to all citizens of the country within the framework of a newly developed system;
 give all citizens of the country new numbers in random order;
 leave the civil numbers the same, but change the numbers of the cards themselves within the framework of the newly developed system;
 leave the civil numbers the same, but change the numbers of the cards themselves in random order;
 change all numbers, and cards, and numbers of citizens, and so on and so forth, all other possible variations on the theme.
As the authorities have already stated, this reform will not be easy and cheap. Changing card numbers will entail a whole chain of necessary actions: it will be necessary not only to explain to people what and how to do now, what and when to change, but also to change the entire system of banking registration of citizens in the country, completely change the system of tax accounting, housing and communal complex, and all other areas that use the current registration numbers in their work. All this is further complicated by the fact that at the moment all information from one structure is available to another (that is, employees of the administration of districts, for example, can take information about a person’s registration at the place of residence from the tax authorities and vice versa), which entails the problem of data exchange between different departments. Simply put, in order to get away from the modern system of registration of citizens and thus protect them from possible leaks of personal information in the future, it is necessary to fundamentally change the entire system and come up with a new one. And this is such a rather sickly reform, which in practice will affect absolutely all state structures.
Meaning, Definition, Suggestions . What is serial number
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Options  Examples
The meaning of the word "ORDINAL"
Indicating a place in some. a row that answers the question: which one is in a row?.
See all meanings of the word ORDINAL
Meaning of the word "NUMBER"
The ordinal number of an object in a series of other homogeneous ones.
See all meanings of NUMBER
Sentences with serial number
?  
A freeform description of the profile position and an indication of a reference number, such as a serial number, that identifies a particular profile position.  
Item number, sir?  
I didn't always have a serial number.  
If I can enlarge the image enough to read the serial number...  
What explains its serial number In the evening show  
This may include information about engine and transmission installation or selection options, but is often a simple serial number.  
The smallest of these is its initial serial number.  
On the transmit side, the data link layer generates an incrementing sequence number for each outgoing TLP.  
On the receive side, the LCRC and the received TLP sequence number are checked at the link layer.  
If the received TLP passes the LCRC check and has the correct sequence number, it is considered valid.  
In such cases, the form contains a hidden field with the original content of the record, a timestamp, a sequence number, or an opaque marker.  
The serial number of the year in the 19year cycle is called its golden number.  
Again, we have a distinction between spoken and written English  definitely a serial number for spoken, but not for written  there are usually exceptions, I'm sure!  
TCP uses a sequence number to identify each byte of data.  
The sequence number of the first byte is chosen by the transmitter for the first packet that is marked SYN.  
Impersonating a different IP address was not difficult until RFC 1948, when the initial sequence number was easily guessed.  
That's why the starting sequence number is now chosen randomly.  
The coordinator first assigns a sequence number to each operation and then propagates this operation to all replicas.  
Other results  
Items that compare equal get the same ranking number, which is the average of what they would have if they were ranked ordinal.  
In addition to the serial number, each dimension can also be given a Selection mode.  
Yes, look, teleon numbers.  
On the day I arrived in Babylon, it did not yet have a serial number.  
All serial numbers of days and weeks during the year are also permanently recorded.  
There is no simple algorithm to determine if a year has 53 weeks from its serial number alone.  
Specific serial numbers vary depending on the policy of the local municipality.  
More complex formats such as week numbers and ordinal days are not allowed.  
In this numbering scheme, sequence numbers start at a negative value, increase until they reach zero, and then loop endlessly through a finite set of positive numbers.  
Sequence numbers refer to position in the row. Learn more
