Kombinacijski kalkulator
Broj načina da se izabere r elemenata iz n kada redoslijed nije važan.
Rezultati se ažuriraju dok tipkate.
O ovom kalkulatoru
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. 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. nCrCombinationCombinations answer "how many groups?" — the odds in a lottery, the number of possible five-card poker hands, ways to pick a committee, or terms in a binomial expansion. nCrCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombinationsCombination
Često postavljana pitanja
Koja je formula za kombinaciju?
nCr = n! / (r! × (n − r)!). za 10 stavki uzetih 3 u isto vrijeme: 120 različitih grupa.
Zašto je nCr manji od nPr?
Kombinacije ignoriraju redoslijed, tako da svaka neuređena grupa odgovara r! uređenim permutacijama. To je razlog zašto nCr = nPr ÷ r!.
Kad treba da koristim kombinaciju?
Kada redoslijed nije važan: lutrija, ruka karata, izbor komiteta ili bilo koji izbor gdje je grupa ono što se računa, a ne njen raspored.
Šta je binomni koeficijent?
To je drugo ime za nCr, vrijednost "n izaberite r" koja se pojavljuje u binomnom teoremu i formira ulazne podatke Pascalovog trougla.
Šta je nC0 ili nCn?
Oba su jednaka 1 — postoji jedan način da se ne izabere nijedno, i jedan način da se izaberu svi.
Da li ovaj alat također pokazuje permutacije?
Da. Pokazuje nPr = nCr × r! pored kombinacije tako da možete usporediti uređene i neuređene brojeve.
API — koristite ovaj kalkulator iz koda
Pozovi ovaj kalkulator kao slobodnu JSON krajnju tačku - nije potreban ključ. Pošalji vrijednosti polja ispod kao parametre upita ili JSON. Sve što izostavite koristi istu zadanu vrijednost kojom je ova stranica unaprijed popunjena; nepoznat parametar je 400, nikad tiha nula. Pročitajte cijelu API dokumentaciju →
Krajnja tačka
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);Rezultati su procjene samo za opće smjernice, a ne financijski, medicinski ili porezni savjeti.