Answer:
[tex]_5^7\txterm{P}=2520[/tex]
Step-by-step explanation:
we have to evaluate P(7, 5)
P(a, b) can be calculated as
[tex]_b^a\txterm{P}=\frac{a!}{(a-b)!}[/tex]
[tex]_5^7\txterm{P}=\frac{7!}{(7-5)!}[/tex]
[tex]=\frac{7\times 6\times 5\times 4\times 3\times 2!}{2!}=2520[/tex]
Hence, the correct option is 2520 i.e
[tex]_5^7\txterm{P}=2520[/tex]
