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WikiCards · Card list · Science cards · Real number
Rare card · Science
Real number, a Rare card
In mathematics, a real number is a number that can be used to measure a continuous one-dimensional quantity such as a length, duration or temperature.
- Rarity
- Rare
- Domain
- Science
- ATK
- 79
- DEF
- 57
- Power
- 136
- Wikipedia reads a year
- 240,000
Power 136 (ATK + DEF): stronger than 75 % of WikiCards cards.
Real number quiz: 3 questions
Three questions on the Real number card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Here, continuous means that pairs of ______ can have arbitrarily small differences.
Answer
values. Here, continuous means that pairs of values can have arbitrarily small differences. From the Real number article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Lambda calculus. Lambda calculus 82 · Real number 79 · Sodium carbonate 71 · Mackenzie of Gairloch 67 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Real number. Real number 240,000 · Electric generator 130,000 · Mackenzie of Gairloch 2,500 · Cardinals created by Pius X 1,300 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Here, continuous means that pairs of values can have arbitrarily small differences.
- Every real number can be almost uniquely represented by an infinite decimal expansion.
- The real numbers are fundamental in calculus and in many other branches of mathematics, in particular by their role in the classical definitions of limits, continuity and derivatives.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Real number article was read about 240,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 79 and blocks with 57: each hit it takes is cut by 23 %.
How to get Real number
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Real number in the power ranking, all domains together.
- Sodium carbonateRare · Science · ATK 71 DEF 65
- BaldrRare · Arts · ATK 67 DEF 69
- Lambda calculusRare · Science · ATK 82 DEF 54
- ArcheanRare · Society · ATK 74 DEF 62
- ElectronicsRare · Science · ATK 71 DEF 65
- Eurasian SteppeRare · Society · ATK 73 DEF 63
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Real number (revision), CC BY-SA 4.0. Photo : User:Phrood~commonswiki, Public domain, Wikimedia Commons.
