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20 (bilang)

Para sa ibang gamit, tingnan 20 (paglilinaw).
← 19 20 21 →
← 20 21 22 23 24 25 26 27 28 29 →
Kardinaldalawampu
Ordinalika-20
(ikadalawampu)
Numerasyonbigesimal
Paktorisasyon22 × 5
Mga panghati1, 2, 4, 5, 10, 20
Griyegong pamilangΚ´
Romanong pamilangXX
Binaryo101002
Ternaryo2023
Oktal248
Duwodesimal1812
Heksadesimal1416

Ang 20 (dalawampu) ay isang likas na bilang at bilang rasyonal na pagkatapos ng 19 at bago ng 21.

Sa matematika

[baguhin | baguhin ang wikitext]
Isang icosahedron na may 20 mukha
  • Isang pronikong bilang ang 20.[1]
  • Isang tetrahedrikong bilang ang 20 bilang 1, 4, 10, 20.[2]
  • Batay ang 20 para sa sistemang bilang na bigesimal.[3]
  • Ang 20 ay ang ikatlong numerong kompuwesto na produkto ng isang kinuwadradong pangunahin at isang pangunahin, at ito din ang ikalawang kasapi ng (22)q na pamilya sa anyong ito.
  • Ang 20 ay ang pinakamaliit na primitibong masaganang bilang.[4]
  • May 20 mukha ang isang icosahedron.[5] May 20 vertex ang dodecahedron.[6]
  • Maaring isulat ang 20 bilang ang kabuuan ng tatlong bilang na Fibonacci na natatangi, i.e. 20 = 13 + 5 + 2.[7]

Mga sanggunian

[baguhin | baguhin ang wikitext]
  1. "Sloane's A002378: Pronic numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Nakuha noong 2020-11-30.((cite web)): CS1 maint: date auto-translated (link)
  2. "Sloane's A000292 : Tetrahedral numbers". The On-Line Encyclopedia of Integer Sequences (sa wikang Ingles). OEIS Foundation. Nakuha noong 2016-05-31.((cite web)): CS1 maint: date auto-translated (link)
  3. Weisstein, Eric W. "Vigesimal". mathworld.wolfram.com (sa wikang Ingles). Nakuha noong 2020-08-16.((cite web)): CS1 maint: date auto-translated (link)
  4. "Sloane's A071395 : Primitive abundant numbers". The On-Line Encyclopedia of Integer Sequences (sa wikang Ingles). OEIS Foundation. Nakuha noong 2016-05-31.((cite web)): CS1 maint: date auto-translated (link)
  5. Weisstein, Eric W. "Icosahedron". mathworld.wolfram.com (sa wikang Ingles). Nakuha noong 2020-08-16.((cite web)): CS1 maint: date auto-translated (link)
  6. Weisstein, Eric W. "Dodecahedron". mathworld.wolfram.com (sa wikang Ingles). Nakuha noong 2020-08-16.((cite web)): CS1 maint: date auto-translated (link)
  7. Dunlap, R. A. (1997). The Golden Ratio and Fibonacci Numbers (sa wikang Ingles). World Scientific. pp. 72–73. ISBN 978-981-238-630-4.((cite book)): CS1 maint: date auto-translated (link)

Bilang Ang lathalaing ito na tungkol sa Bilang ay isang usbong. Makatutulong ka sa Wikipedia sa pagpapalawig nito.

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20 (bilang)
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