[tex]\displaystyle\bf\\C_n^0+C_n^1=8\\\\C_n^0=1\\\\C_n^1=n\\\\Rezolvare:\\\\C_n^0+C_n^1=8\\\\1+n=8\\\\n=8-1\\\\\boxed{\bf n=7}[/tex]
[tex]\it C^0_n+C^1_n=8\ \Rightarrow\ 1+n=8 \Rightarrow n=7[/tex]
