Question

Cum se rezolva acest exercitiu?

Answer 1

 

$\displaystyle\bf\\C_n^0+C_n^1=8\\\\C_n^0=1\\\\C_n^1=n\\\\Rezolvare:\\\\C_n^0+C_n^1=8\\\\1+n=8\\\\n=8-1\\\\\boxed{\bf n=7}$

 

Answer 2

$\it C^0_n+C^1_n=8\ \Rightarrow\ 1+n=8 \Rightarrow n=7$