[tex] \large\underline \bold{{SOLUTION}}[/tex]
[tex]\longmapsto\rm{P(n,r)= \frac{n!}{(n-r)!}}[/tex]
[tex]\longmapsto\rm{P(4,3)= \frac{4!}{(4-3)!}}[/tex]
[tex]\longmapsto\rm{P(4,3)= \frac{4!}{1!}}[/tex]
[tex]\longmapsto\rm{P(4,3)= \frac{4×3×2×1}{1}}[/tex]
[tex]\longmapsto\rm{P(4,3)= 4×3×2×1}[/tex]
[tex]\longmapsto\boxed{\rm{P(4,3)= 24}}[/tex]
[tex] \large\underline{ \bold{ANSWER}}[/tex]
