n choose k calculator

Find out how many different ways you can choose k items from n items set without repetition and without order. This number is also called combination number or n choose k or binomial coefficient or simply combinations. See also general combinatorial calculator.



Ck(n)=(nk)=n!k!(nk)!  n=10 k=4  C4(10)=(104)=10!4!(104)!=109874321=210

Number of combinations: 210