Kombinasyon ng kalkulador (nCr)
Ang mga ito ay maaaring matukoy sa pamamagitan ng pag-iiba ng mga katangian ng mga elementong n at r.
Mga resulta update bilang ikaw ay mag-type.
Tungkol sa kalkulador na ito
is a simple calculator that calculates the number of combinations you can choose from a set of n items when order does not matter — picking the same group in a different sequence counts once. This calculator returns the exact count, the formula, and the matching number of ordered arrangements (nPr) for comparison. This calculator returns the exact count, the formula, and the matching number of ordered arrangements (nPr) for comparison. This calculator returns the exact count, the formula, and the matching number of ordered arrangements (nPr).CombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombinationCombination
Mga madalas itanong na katanungan
Ano ang kombinasyon formula?
Ang nCr = n! / (r! × (n − r)!). Para sa 10 mga item na kinuha3sa isang oras: 120 iba't ibang mga grupo.
Bakit ang nCr ay mas maliit kaysa sa nPr?
Kombinasyon hindi pag-isipan order, kaya ang bawat grupo ng mga hindi naka-order ay tumutugma sa r! iniutos permutations. Na kung bakit nCr = nPr ÷ r!.
Kailan dapat gamitin ang isang kumbinasyon?
Kapag hindi mahalaga ang pagkakasunud-sunod: lottery numbers, isang kamay ng mga card, pagpili ng isang komite, o anumang pagpili kung saan ang grupo ay kung ano ang bilang, hindi ang pagkakaayos nito.
Ano ang isang binomial koepisyent?
Ito ay isa pang pangalan para sa nCr, ang "n piliin ang r" na halaga na lumilitaw sa binomial teorema at bumubuo ng mga entry ng Pascal's triangle.
Ano ang mga uri ng mga selula?
Parehong pantay-pantay 1 - may isang paraan upang pumili ng wala, at isang paraan upang pumili ng lahat ng mga ito.
Ay tool na ito din ipakita permutations?
Oo. Ito ay nagpapakita ng nPr = nCr × r! kasama ang kumbinasyon upang maaari mong ihambing ang iniutos at hindi naka-order counts.
API — gamitin ang kalkulador na ito mula sa code
Tawagan ang kalkulador na ito bilang isang libreng JSON endpoint - walang key na kinakailangan. Ipadala ang mga halaga ng patlang sa ibaba bilang mga parameter na query o JSON. Basahin ang buong API docs →
Endpoint
GET https://calculator.free/api/v1/combination/curl
curl "https://calculator.free/api/v1/combination/?n=10&r=3"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/combination/?" + new URLSearchParams({
"n": "10",
"r": "3"
}));
const data = await r.json();
console.log(data.results);Ang mga resulta ay mga pagtatantya para sa pangkalahatang gabay lamang, hindi pinansiyal, medikal o payo sa buwis.