90

89 ← 90 → 91
읽는 법구십
세는 법아흔
한자九十
소인수 분해2 × 32× 5
로마 숫자XC
2진수10110102
3진수101003
4진수11224
5진수3305
6진수2306
8진수1328
12진수7612
16진수5A16
20진수4A20
36진수2I36
φ(90)24
σ*(90)180
d(90)12
σ(90)234
μ(90)0
M(90)-2
수 목록 · 정수

90(구십)은 89보다 크고 91보다 작은 자연수다.

수학

  • 합성수로, 그 약수는 총 12개다. (1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90)
    • 연속하는 두 소수(素數)의 합으로 나타낼 수 있으며, 이 성질을 지닌 앞의 수는 84, 다음 수는 100이다.
    • 연속하는 두 자연수의 곱으로 나타낼 수 있으며, 이 성질을 지닌 앞의 수는 72, 다음 수는 110이다.
    • 연속하는 자연수 5개의 제곱합으로 나타낼 수 있으며, 이 성질을 지닌 앞의 수는 55, 다음 수는 135다.
    • 연속하는 두 개의 의 제곱합으로 나타낼 수 있는 가장 작은 수이며(은 자연수), 이 성질을 지닌 다음 수는 810이다.
  • 90도 각도는 직각이다.

과학

교통

문화유산

방송

기타

  • 연도: 90년, 기원전 90년
  • 90년대
  • 장기의 착점 수는 90개(가로 9, 세로 10(각 진영당 5))이다.
  • 90세를 졸수(卒壽)라 칭한다. 이는 卒의 약자를 풀면 九十(90)이 되는 데서 유래하였다.
이 글은 숫자에 관한 토막글입니다. 여러분의 지식으로 알차게 문서를 완성해 갑시다.

Read other articles:

Anis kening

Anis kening Status konservasi Risiko Rendah (IUCN 3.1)[1] Klasifikasi ilmiah Kerajaan: Animalia Filum: Chordata Kelas: Aves Ordo: Passeriformes Famili: Turdidae Genus: Turdus Spesies: T. obscurus Nama binomial Turdus obscurus(Gmelin, 1789) Anis kening (Turdus obscurus) merupakan jenis burung kicau dari salah satu dari beberapa jenis burung anis yang dapat dijumpai di beberapa daerah Indonesia. Burung ini juga dikenal dengan sebutan punglor kayu maupun anis kuning Deskripsi ...

 

Mazmur 36

Mazmur 36Naskah Gulungan Mazmur 11Q5 di antara Naskah Laut Mati memuat salinan sejumlah besar mazmur Alkitab yang diperkirakan dibuat pada abad ke-2 SM.KitabKitab MazmurKategoriKetuvimBagian Alkitab KristenPerjanjian LamaUrutan dalamKitab Kristen19← Mazmur 35 Mazmur 37 → Mazmur 36 (disingkat Maz 36, Mzm 36 atau Mz 36; penomoran Septuaginta: Mazmur 35) adalah sebuah mazmur dalam bagian ke-1 Kitab Mazmur di Alkitab Ibrani dan Perjanjian Lama dalam Alkitab Kristen. Mazmur ini digubah...

 

1950 Albanian Cup

This article relies excessively on references to primary sources. Please improve this article by adding secondary or tertiary sources. Find sources: 1950 Albanian Cup – news · newspapers · books · scholar · JSTOR (February 2012) (Learn how and when to remove this template message) Football tournament season 1950 Albanian CupKupa e ShqipërisëTournament detailsCountry AlbaniaFinal positionsChampionsDinamo TiranaRunner-upPartizani← 19491...

Hurd–Mori 1,2,3-thiadiazole synthesis

Name reaction in organic chemistry Hurd–Mori 1,2,3-thiadiazole synthesis Named after Charles D. HurdRaymond I. Mori Reaction type Ring forming reaction The Hurd–Mori 1,2,3-thiadiazole synthesis is a name reaction in organic chemistry that allows for the generation of 1,2,3-thiadiazoles through the reaction of N-acylated or tosyl hydrazone derivatives with thionyl chloride.[1][2][3][4] References ^ Hurd, Charles D.; Mori, Raymond I. (1995-10-01). On Acylhydr...

 

منطقة لاندسهوت

منطقة لاندسهوت  علم شعار الاسم الرسمي (بالألمانية: Landkreis Landshut)‏(بالألمانية: Bezirksamt Landshut)‏    الإحداثيات 48°34′N 12°12′E / 48.56°N 12.2°E / 48.56; 12.2   [1] تاريخ التأسيس 1 يوليو 1862  تقسيم إداري  البلد ألمانيا[2]  التقسيم الأعلى بافاريا السفلى  العاص...

 

Power Macintosh 7300

Personal computer by Apple Computer This article relies excessively on references to primary sources. Please improve this article by adding secondary or tertiary sources. Find sources: Power Macintosh 7300 – news · newspapers · books · scholar · JSTOR (May 2023) (Learn how and when to remove this template message) Power Macintosh 7300 / Workgroup Server 7350A Power Macintosh 7300/200Also known asMontanaDeveloperApple ComputerProduct familyPower Macinto...

Tornado outbreak of March 3, 2019

Severe weather effect in the Southeastern United States Parts of this article (those related to Confirmed tornadoes) need to be updated. The reason given is: NCEI reports not incorporated.. Please help update this article to reflect recent events or newly available information. (February 2024) Tornado outbreak of March 3, 2019Category 1 Notable (RSI/NOAA: 1.374)Tornado warnings and Storm Prediction Center tornado reports on March 3 superimposed on a Suomi NPP infrared...

 

大字 (数字)

この項目には、一部のコンピュータや閲覧ソフトで表示できない文字が含まれています（詳細）。 数字の大字（だいじ）は、漢数字の一種。通常用いる単純な字形の漢数字（小字）の代わりに同じ音の別の漢字を用いるものである。 概要 壱万円日本銀行券（「壱」が大字） 弐千円日本銀行券（「弐」が大字） 漢数字には「一」「二」「三」と続く小字と、「壱」「�...

 

McLean Homes

Major British housebuilding business McLean HomesIndustryHousebuildingFounded1920Defunct1996FateAcquiredSuccessorTarmacHeadquartersWolverhampton, UK[1]Key peopleSir Eric Pountain, (Chairman) McLean Homes was a major British housebuilding business. It was bought by a major construction company, Tarmac, in 1972 and the brand ceased to be used in 1996. History 1960s McLean Homes brochure The business was formed in 1920 by John McLean and incorporated in 1932. From the early 1950s the Com...

State Bank of India

Indian public sector bank .sbi redirects here. For other uses, see SBI (disambiguation). State Bank of IndiaState Bank Bhavan, Nariman Point, MumbaiCompany typePublicTraded asNSE: SBINBSE: 500112LSE: SBIDBSE SENSEX ConstituentNSE NIFTY 50 ConstituentISININE062A01020IndustryBanking, financial servicesPredecessorImperial Bank of India(1921 – 1955) Bank of Calcutta(1806 – 1921) Bank of Bombay(1840 – 1921) Bank of Madras(1843 – 1921) Founded1 July 1955; 68 year...

 

Louis I, Prince of Anhalt-Köthen

German prince This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Louis I, Prince of Anhalt-Köthen – news · newspapers · books · scholar · JSTOR (January 2023) (Learn how and when to remove this message) Louis I, Prince of Anhalt-Köthen. Louis I of Anhalt-Köthen (German: Ludwig I., Fürst von Anhalt-Köthen; ...

 

Simbolo chimico

Simboli utilizzati da John Dalton per rappresentare gli elementi chimici (A New System of Chemical Philosophy, 1808). Un simbolo chimico è un'abbreviazione o una rappresentazione accorciata del nome di un elemento chimico. Tutti gli elementi hanno un simbolo chimico di una (ad esempio C per il carbonio) o due (Li per il litio) lettere; alcuni degli elementi creati artificialmente possiedono un simbolo provvisorio di tre lettere (Uup per l'ununpentio). Indice 1 Caratteristiche 2 Bibliografia ...

Confirmation bias

Bias confirming existing attitudes Confirmation bias (also confirmatory bias, myside bias,[a] or congeniality bias[2]) is the tendency to search for, interpret, favor, and recall information in a way that confirms or supports one's prior beliefs or values.[3] People display this bias when they select information that supports their views, ignoring contrary information, or when they interpret ambiguous evidence as supporting their existing attitudes. The effect is stron...

 

Star World

Star WorldLogo Star World yang digunakan di Hong Kong, Taiwan, Timur Tengah, Afrika Utara dan Asia TenggaraDiluncurkan15 Desember 1994Ditutup1 Oktober 2017 (Asia Tenggara, Hong Kong dan Vietnam) (kecuali Timur Tengah, India, Tiongkok, Taiwan, Pakistan, Asia Selatan)15 Maret 2023 (India)1 Januari 2024 (Taiwan)PemilikFox Networks GroupNegaraHong KongBahasaInggrisKantonHindiMandarinArabKantor pusatHong KongMumbaiSaluran seinduk Daftar Star MoviesFox Movies (MENA)FoxFox (Arabia)National Geographi...

 

الانتخابات الإسبانية العامة 1910

الانتخابات الإسبانية العامة 1910  →1907 8–22 مايو 1910 1914←  جميع مقاعد مجلس النواب ال404 و180 من 360 من مقاعد مجلس الشيوخلتكوين أغلبية برلمانية في مجلس النواب احتاج ل 203 مقعد. إجمالي الناخبين 4,721,480(3,383,070 في الدوائر الانتخابية التي جرت فيها الانتخابات) نسبة المشاركة 2,494,082 (73.7%)   ...

King Golf

King Golfキング ゴルフ(Kingu Gorufu)GenreOlahraga (golf) MangaPengarangKen SasakiPenerbitShogakukanMajalahWeekly Shōnen SundayDemografiShōnenTerbitAgustus 2008 – sekarangVolume12  Portal anime dan manga King Golf (キング ゴルフcode: ja is deprecated , Kingu Gorufu) adalah serial manga shōnen Jepang karya Ken Sasaki. Manga ini telah diserialkan dalam majalah manga Shōnen Sunday sejak Agustus 2008, dan memenangkan penghargaan untuk Manga Shōnen Terbaik di Penghargaan...

 

Société générale

Pour les articles homonymes, voir SG. SG Le siège central - 29, boulevard Haussmann. Création 4 mai 1864 Dates clés 29 juillet 1987 : privatisation Personnages clés Slawomir Krupa (directeur), Paulin Talabot, Eugène Schneider Forme juridique Société anonyme Action Euronext : GLE Slogan C'est vous l'avenir Siège social 29, boulevard Haussmann75009 Paris[1] France Direction Slawomir Krupa (directeur général) et Lorenzo Bini Smaghi (président)[2] Actionnaires Déc...

 

Mandarin Phonetic Symbols II

Romanization system for Mandarin This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Mandarin Phonetic Symbols II – news · newspapers · books · scholar · JSTOR (March 2024) (Learn how and when to remove this message) Mandarin Phonetic Symbols IITraditional Chinese國語注音符號第二式Simplified C...

John Alexander Ahl

American politician John Alexander AhlMember of the U.S. House of Representativesfrom Pennsylvania's 16th districtIn officeMarch 4, 1857 – March 3, 1859Preceded byLemuel ToddSucceeded byBenjamin F. Junkin Personal detailsBorn(1813-08-16)August 16, 1813Strasburg, PennsylvaniaDiedApril 25, 1882(1882-04-25) (aged 68)Newville, PennsylvaniaPolitical partyDemocraticAlma materUniversity of MarylandSignature John Alexander Ahl (August 16, 1813 – April 25, 1882) was ...

 

القاهرة والناس (مسلسل)

القاهرة والناس (مسلسل تلفزيوني مصري) القاهرة والناس مسلسل اجتماعي مصري [1] للمخرج محمد فاضل (مخرج)، صدرت حلقته الأولي في أكتوبر 1967،[2] وقدم 84 حلقة [3] وكان يتناول حكايات منفصلة مدة الحلقة نصف ساعة وهي عن طبيعة العلاقات الأسرية والاجتماعية سواء بالمنزل أو المدرسة أ�...