Find the value of $\nPr{6}{3}$6P3.
Find the value of $\nPr{5}{5}$5P5.
Find the value of $\nPr{4}{0}$4P0.
Find the value of $\nPr{11}{1}$11P1.
Recognise and distinguish between a permutation case and a combination case.
Answer simple problems on arrangement and selection.