Question Number 118839 by andilizhaa last updated on 20/Oct/20
Commented by bobhans last updated on 20/Oct/20
$${P}\:_{\mathrm{5}} ^{\mathrm{8}} \:=\:\frac{\mathrm{8}!}{\mathrm{3}!}\:=\:\mathrm{8}×\mathrm{7}×\mathrm{6}×\mathrm{5}×\mathrm{4}=\mathrm{6720} \\ $$$$\mathrm{8}×\mathrm{7}×\mathrm{6}×\mathrm{5}×\mathrm{4} \\ $$$$\mathrm{6720}.\mathrm{0} \\ $$