Question

Cate combinatii de 3 numere sunt daca combini nr de la 1 la 10

Answer 1

Combinari de 10 luate cate 3 =10!/(3!*(10-3)!)=10!/(3!*7!)=7!*8*9*10/(3!*7!)=
8*9*10/1*2*3=4*3*10=120