Solving permutation equations

Practice

Solve:  \(_nP_4 = 3[_nP_3]\)
\(n = 6\)
Let \(n \gt 4\). Solve:  \(\dfrac{_nP_4}{_{n - 1}P_4} = \dfrac{5}{3}\)
\(n = 10\)
Solve:  \(_{n + 1}P_2 = 5 \cdot {_n}P_1\)
\(n = 4\)
Solving Permutations Equations
Mario's Math Tutoring