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WikiCards · Card list · Science cards · Cube root
Uncommon card · Science
Cube root, an Uncommon card
In mathematics, a cube root of a number x is a number y that has the given number as its third power, that is y 3 = x. The number of cube roots of a number depends on the number system that is considered.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 60
- DEF
- 43
- Power
- 103
- Wikipedia reads a year
- 29,000
Power 103 (ATK + DEF): stronger than 55 % of WikiCards cards.
Cube root quiz: 3 questions
Three questions on the Cube root card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
For ______, the real cube roots of 8 and −8 are respectively 2 and −2.
Answer
example. For example, the real cube roots of 8 and −8 are respectively 2 and −2. From the Cube root article on Wikipedia.
Which of these Wikipedia articles is read the most in a year?
Answer
Activation energy. Activation energy 44,000 · Cube root 29,000 · ARM big.LITTLE 20,000 · Ball joint 15,000 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.
- Every real number x has exactly one real cube root that is denoted x 3 {\textstyle {\sqrt[{3}]{x}}} and called the real cube root of x or simply the cube root of x in contexts where complex numbers are not considered.
- For example, the real cube roots of 8 and −8 are respectively 2 and −2.
- The real cube root of an integer or of a rational number is generally not a rational number, nor a constructible number.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Cube root article was read about 29,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 60 and blocks with 43: each hit it takes is cut by 17 %.
How to get Cube root
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 Cube root in the power ranking, all domains together.
- Common logarithmUncommon · Science · ATK 62 DEF 41
- Ammonium acetateUncommon · Science · ATK 53 DEF 50
- Chargaff's rulesUncommon · Nature · ATK 63 DEF 40
- Rubus allegheniensisUncommon · Nature · ATK 53 DEF 50
- Bruno DuarteUncommon · Society · ATK 61 DEF 42
- Ripple RockUncommon · Nature · ATK 59 DEF 44
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, Cube root (revision), CC BY-SA 4.0. Photo : Krishnavedala, CC BY-SA 4.0, Wikimedia Commons.
