questionedithistorytranslations

In maths, what is aleph-zero?

the cardinality of the set of all countable ordinal numbers
the cardinality of the set of all natural numbers
the base value of the natural logarithm
the cardinality of the set of real numbers
The aleph numbers are a sequence of numbers used to represent the cardinality of infinite sets that can be well-ordered. The cardinality of the natural numbers is aleph-zero, the next larger cardinality is aleph-one, then aleph-two and so on. The concept and notation are due to Georg Cantor, who defined the notion of cardinality and realized that infinite sets can have different cardinalities.
Ninjai
0
Correct this question
wikipedia → Aleph number
1
Very interesting!
reach: rather globalmathematicsnumbersscience
Numbers quizMathematics quizScience quiz
  You will play as

Answers by country

the cardinality of the set of all countable ordinal numbers
the cardinality of the set of all natural numbers
the base value of the natural logarithm
the cardinality of the set of real numbers
answers
flagAustralia
11%
44%
33%
11%
27
flagPakistan
8%
41%
33%
16%
12
flagCanada
20%
40%
30%
0%
10
flagthe United States
18%
39%
26%
15%
96
flagPoland
25%
38%
17%
17%
4320
flagthe Netherlands
33%
33%
27%
5%
18
flagRepublic of Ireland
18%
31%
18%
31%
16
flagIndia
24%
30%
31%
11%
90
flagFrance
30%
30%
30%
10%
10
flagMalaysia
30%
30%
30%
10%
10
flagGermany
20%
27%
32%
18%
370
flagthe United Kingdom
18%
27%
27%
26%
76
flagAustria
13%
23%
43%
19%
51
flagSwitzerland
31%
17%
26%
22%
45
flagGreece
30%
15%
30%
23%
13

What is the name of this butterfly species?

Goldhair moth
Neopalpa donaldtrumpi
Unsightly butterfly
Huskhead neopalda

Where is The Encyclopaedia Britannica produced?

London
Oxford
Edinburgh
Chicago

Who was the first to create a zoo and botanical garden for scientific study?

Aristotle
Galileo
Carl Linnaeus
Charles Darwin

What is ikebana?

an art of flower arrangement
a ceremonial preparation of tea
an art of appreciating incense
a way to tie a kimono