[tex]1234 \\
1243 \\
1324 \\
1343 \\
....\\
samd \\
\text{Numarul combinatiilor il calculezi cu formula: } \\
n = 4! = 1 \times 2 \times 3 \times 4 = \boxed{24~combinatii }~~~~~unde~~ 4! = "4 ~factorial" \\
sau \\
n = P_4 = 1 \times 2 \times 3 \times 4 = \boxed{24~combinatii }~~unde~ P_4 = "permutari~de~4" \\
[/tex]