Of 30 applicants for a job, 12 had at least 4 years' experience, 18 had degrees, and 3 had less than 4 years' experience and did not have a degree.How many of the applicants had at least 4 years' experience and a degree?  Answers:
A) 14 B) 13 C) 9 D) 7 E) 5
D. 7   30 - 3= 
<gadget id="calculator">30 - 3</gadget>
<output>27</output>
27   27 - 12 - 18= -7   Then 7 are in the intersection between 4 years experience and degree.   Answer 7
<result>D</result>
Of 30 applicants for a job, 12 had at least 4 years' experience, 18 had degrees, and 3 had less than 4 years' experience and did not have a degree.How many of the applicants had at least 4 years' experience and a degree?