Venn Diagram, 3 categories

Question

In 2012, EXECUTIVE magazine surveyed the Chief Executive Officers (CEOs) of the 500 largest US corporations. Of these 500 people (each company has one CEO), 310 had Business degrees (of any sort), 238 had Undergraduate Business degrees, and 184 had Graduate Business degrees.

(a) How many CEOs have both undergraduate and graduate degrees in business?

(b) How many CEOs had exactly one business degree?

Answer 1

under graduate degree + graduate degree

238 + 184 = 422

a) CEOs have both undergraduate and graduate degrees in business = 422 - 310 = 112

b)CEO having exactly one business degree = 310 -112=198