College admissions II In Exercise 25, we saw that in 2007 Harvard accepted about 7% of its applicants, MIT 10%, and Penn 14%. Jorge has applied to all three. He figures that his chances of getting...

College admissions II In Exercise 25, we saw that in 2007 Harvard accepted about 7% of its applicants, MIT 10%, and Penn 14%. Jorge has applied to all three. He figures that his chances of getting into at least one of the three must be about 31%.

a) How has he arrived at this conclusion?

b) What assumption is he making?

c) Do you agree with his conclusion?