Răspunsuri

2014-08-28T20:03:36+03:00
C_{n}^{k} =\frac{n!}{k!(n-k)!}=C_{6}^{2}=6!/2!*4!=6*5*4!/2*4!=30/2=15
Imi poti face si rezolvarea exercitiului ?
Da
Intelegi?