The number of different permutations of n different things taken k at a time without repetitions is
1
\(\frac{{n!}}{{k!}}\)
2
\(\frac{{n!}}{{\left( {n - k} \right)!}}\)
3
\(\frac{{n!}}{{k!\left( {n - k} \right)!}}\)
4
nk
The number of different permutations of n different things taken k at a time without repetitions is
\(\frac{{n!}}{{k!}}\)
\(\frac{{n!}}{{\left( {n - k} \right)!}}\)
\(\frac{{n!}}{{k!\left( {n - k} \right)!}}\)
nk