This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
It is not clear if the question rightly posed..

A person can go to hospital on any of the 7 days.  So 7 ways of doing it.
Eight persons are independent.  So total number of ways in which all people can go to hospital on 7 days of a week are :   7^8.

Atmost 7 people can go to hospital on different days.  So the 8th person has to go to hospital on some day on which another person has already gone to hospital.

SO probability is equal to 1.

1 3 1