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WikiCards · Card list · Science cards · Rational number
Uncommon card · Science
Rational number, an Uncommon card
In mathematics, a rational number is a number that can be expressed as the quotient or fraction p q of two integers, a numerator p and a nonzero denominator q.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 67
- DEF
- 62
- Power
- 129
- Wikipedia reads a year
- 180,000
Power 129 (ATK + DEF): stronger than 70 % of WikiCards cards.
Rational number quiz: 3 questions
Three questions on the Rational number card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
For example, 3/7 is a rational number, as is every ______.
Answer
integer. For example, 3/7 is a rational number, as is every integer. From the Rational number article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Basel problem. Basel problem 75 · Fahrenheit 70 · Rational number 67 · Gazelle 64 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Fahrenheit. Fahrenheit 510,000 · Event horizon 270,000 · Rational number 180,000 · Basel problem 140,000 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.
- For example, 3/7 is a rational number, as is every integer.
- The set of all rational numbers is often referred to as "the rationals", and is closed under addition, subtraction, multiplication, and division by a nonzero rational number.
- It is a field under these operations and therefore also called the field of rationals or the field of rational numbers.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Rational number article was read about 180,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 67 and blocks with 62: each hit it takes is cut by 25 %.
How to get Rational 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 Rational number in the power ranking, all domains together.
- Anterior cruciate ligamentRare · Science · ATK 66 DEF 63
- Cellular respirationRare · Nature · ATK 70 DEF 59
- Kingdom of CastileUncommon · History · ATK 67 DEF 62
- GazelleUncommon · Nature · ATK 64 DEF 64
- AstrophysicsUncommon · Science · ATK 72 DEF 57
- Black HillsUncommon · Nature · ATK 73 DEF 56
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, Rational number (revision), CC BY-SA 4.0. Photo : Mortalmoth, Public domain, Wikimedia Commons.
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