You overestimated the hobo population by 1?

missed #5

and I think, he looks homeless but I suspect he's a Noble prize winning scientist.

Tough quiz

Just better than random guessing.

I went by their skin condition (exposure to elements).

who had it posted on her Facebook page. She got 10 out of 10. She said she judged by trying to differentiate the look of contemplation from the look of suffering on their faces.