Sagot :
[tex] \large\underline \bold{{SOLUTION}}[/tex]
[tex]\longmapsto\rm{P_n=n!}[/tex]
[tex]\longmapsto\rm{P_5=5!}[/tex]
[tex]\longmapsto\rm{P_5=5×4×3×2×1}[/tex]
[tex]\longmapsto\boxed{\rm{P_5=120}}[/tex]
[tex] \large\underline{ \bold{ANSWER}}[/tex]
- 120 different ways