Question

4) taken two at a time . AD A.B, DC AC, BO Acide Evaluate each expression. 5) AP2 6) P 1 2. 4!/21=(43210121 wilnoph

Answer 1

`^5P_1\text{ =5}`Step-by-step explanation:

6) 5 P 1

To evaluate the above permuation, we would aply the permutation formula:

`^nP_r\text{ = }(n!)/((n-r)!r!)`
`\begin{gathered} n\text{ = 5, r = 1} \\ ^5P_1=(5!)/((5-1)!1!) \\ \end{gathered}`
`\begin{gathered} ^5P_1\text{ = }(5!)/(4!*1!) \\ 1!\text{ = 1} \\ 5!\text{= }5*4! \\ ^5P_1\text{ = }(5*4!)/(4!*1) \\ ^5P_1\text{ = }5 \end{gathered}`