OMG. Are you really this stupid or just playing dumb?
Let’s say that redheads are 70% of the population. Now, to make it really simple for you, let’s say you need to fill a role from a pool of 10 people, and 7 have red hair. But you are told NOT to pick a redhead. You have to limit yourself to the three people who have black hair.
The odds are 70%, or approval approximately 2:1 that the most competent person in the group is a redhead, who you are not allowed to pick. The odds are only 30% that the best qualified is one of the three with black hair.