I-Calculator yokudibanisa (nCr)

Bala iindlela zokukhetha i-r izinto ukusuka kwi-n xa ukulandelana akubalulekile.

IiNkqubo —
Ifomula —
Iinkqubo ezilungisiweyo (nPr) —

Iinketho ze projekti

Ingaba le calculator ikunika umyalezo olungileyo?

Malunga nale Calculator

combination counts how many ways you can choose r items from a set of n 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. Choosing none or all gives nC0 = nCn = 1, and as with permutations, r cannot exceed n. A combination counts how many ways you can choose r items from a set of n when order does not matter — picking the same group in a different sequence.Combinations answer "how many groups?" —The formula is nCr = n! / (r! × (n − r)!). For 10 items taken 3 at a time there are 120 distinct groups.Combinations answer "how many groups?" —The formula is nCr =

Imibuzo ebuza rhoqo

Yintoni ifomula yodityaniswa?

nCr = n! / (r! × (n − r)!). Kwizinto ezili-10 ezithathwe 3 ngexesha: 120 iiqela ezahlukeneyo.

Kutheni i-nCr incinci kune-nPr?

Uthelekiso aluyi kuthobela ulawulo, ngoko ke iqela ngalinye elingalunganga lihambelana ne r! iinguqulelo ezilungisiweyo. Le yisizathu sokuba nCr = nPr ÷ r!.

Ndifanele ndisebenzise njani u combinator?

Xa ukulandelana akuyi nto ibalulekileyo: amanani e-lottery, isandla sekhadi, ukukhetha ikomiti, okanye nayiphi na ukhetho apho iqela liyinxalenye ebalulekileyo, hayi ukulungelelaniswa kwayo.

Yintoni i-binomial coefficient?

Enye igama le nCr, "n khetha r" ixabiso elivela kwi binomial theorem kwaye lidibanisa izingeniso ze Pascal' s triangle.

Yintoni i-nC0 okanye i-nCn?

Zonke zilingana 1 - kukho indlela enye yokukhetha akukho nto, nendlela enye yokukhetha zonke.

Ingaba le sixhobo sibonisa na iinguqulelo?

Ewe. Ibonisa i nPr = nCr × r! ecaleni kodityaniswa ukuze ulinganise ubalo olulungisiweyo kunye nolungalungisiweyo.

Ii-calculators ezihambelanayo

I-Calculator ye-Permutation (nPr) I-Calculator ye-Factorial

❤️ Uthando Calculator.Free? Yabelana

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API — sebenzisa le calculator ukusuka kwikhowudi

Nceda le khadi lemali njengendawo esemva ye-JSON ekhululekileyo - akukho qhosha lifunekayo. Thumela amaxabiso endawo ezantsi njengeparameter yombuzo okanye i-JSON. Nantoni na oyenzayo isebenzisa okungagqibekanga okufanayo eli phepha ligqityiwe ngaphambili; iparameter engaziwayo yi 400, ayikho i zero ekhululekileyo. Funda i-API epheleleyo →

Incopho yesiphelo

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);

Results are estimates for general guidance only, not financial, medical or tax advice.