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number

A number is a mathematical object used to count, measure, and label. The original examples are the natural numbers 1, 2, 3, 4 and so forth. A notational symbol that represents a number is called a numeral. In addition to their use in counting and measuring, numerals are often used for labels (as with telephone numbers), for ordering (as with serial numbers), and for codes (as with ISBNs). In common usage, number may refer to a symbol, a word, or a mathematical abstraction. In mathematics, the notion of number has been extended over the centuries to include 0, negative numbers, rational numbers such as 1/2 and −2/3, real numbers such as √2 and π, and complex numbers, which extend the real numbers by adding a square root of −1. Calculations with numbers are done with arithmetical operations, the most familiar being addition, subtraction, multiplication, division, and exponentiation. Their study or usage is called arithmetic. The same term may also refer to number theory, the study of the properties of numbers. Besides their practical uses, numbers have cultural significance throughout the world.
Romania flag - romania flag pe rprova
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Romania flag

Added 12 days ago by Kroy

46

Difficult puzzle - complicated jigsaw puzzle
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Difficult puzzle

Added 3 weeks ago by andi

21

green  freecell - green felt freecell, freecell, puzzle games
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green freecell

Added 3 months ago by Jeżyna

25

Treasure hunt - treasure hunt, for children, catechism
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Treasure hunt

Added 4 months ago by Agnese

5

Internet security - Internet security
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Internet security

Added 4 months ago by Wiktoria

9

logout - Each of us has accounts on various websites or social networks, but does everyone remember to log ou
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logout

Added 4 months ago by Angelika

16

Social media - Protect your data on social networks
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Social media

Added 4 months ago by Angelika

11

Security in the network - wfaqGWERGWHHJKHXCDTJDH
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Security in the network

Added 4 months ago by Remi

6

Safe Internet rules - 4. Never give up on your internet
real name and surname. Use it
nickname, or pseudonym, Internet
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Safe Internet rules

Added 4 months ago by Nikola

6

Internet - principles of safe use of the network
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Internet

Added 4 months ago by Natalia

5

Internet - Rules for safe use of the network
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Internet

Added 4 months ago by Natalia

3

Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added year ago by andi

17

Security - Carefully download files from the network
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Security

Added year ago by Daria J.

3

Security - Do not provide your personal data or passwords on the network
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Security

Added year ago by Daria

3

Jigsaw puzzle - colorful jigsaw puzzle
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Jigsaw puzzle

Added year ago by andi

20

Giuseppe - How nice to make an online puzzle like this
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Giuseppe

Added year ago by Ulisse

39

Colorful puzzle - colorful jigsaw puzzle
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Colorful puzzle

Added year ago by andi

28

Puzzle - SECRET GAMES, HEBRAJSKI LANGUAGE, RIDING, TIPS
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Puzzle

Added year ago by KAKAKA

16

Secure Internet - It is a poster of the day of secure internet
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Secure Internet

Added year ago by Internet

21

Jigsaw puzzle - complicated puzzle
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Jigsaw puzzle

Added year ago by andi

21

SCRITTAJPG - Motivational phrase don Fabio Rosini
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SCRITTAJPG

Added year ago by abc

13

Jigsaw puzzle - puzzle for the patient
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Jigsaw puzzle

Added year ago by andi

23

Bone and coupons - colorful puzzle jigsaw
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Bone and coupons

Added year ago by andi

21

State flags - complicated puzzle
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State flags

Added year ago by andi

14

Coding - Game for children. Coding and mathematics. Logic games.
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Coding

Added year ago by KIN

27

Logic puzzle - Logic puzzle to solve at school.
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Logic puzzle

Added year ago by KIN

53

School with class - School with Class is one of the largest and most recognizable nationwide social campaigns, conducted
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School with class

Added year ago by szk

176

Html code - puzzle - Why do I have to write here 20 characters. what do you mean.
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Html code - puzzle

Added year ago by noja

9

olimpia elblag - logo of the olimpia elblag sports club
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olimpia elblag

Added year ago by dziadu

87 1

proverb - so you can stay without teeth
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proverb

Added year ago by Hala

7

frase famiglia - la famiglia è importante
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frase famiglia

Added year ago by Andrea

18

saying - Such a dream
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saying

Added year ago by Halina

17