The number of ways that can he make his rounds if he checks each patient once is 720.
Calculation of the number of ways:
Since A doctor has 6 patients to visit.
So here we can write
= 6!
[tex]= 6\times 5\times 4\times 3\times 2\times 1[/tex]
=720
Therefore, we can concluded that The number of ways that can he make his rounds if he checks each patient once is 720.
Learn more about ways here: https://brainly.com/question/21647479
