Of 45 applicants for a job, 21 had at least 4 years' experience, 27 had degrees, and 5 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?	Choices
A) 6
B) 8
C) 4
D) 3
E) 2
45 - 5= 
<gadget id="calculator">45 - 5</gadget>
<output>40</output>
40   40 - 21 - 27= -8   Then 8 are in the intersection between 4 years experience and degree.   Answer : 8
<result>B</result>
Of 45 applicants for a job, 21 had at least 4 years' experience, 27 had degrees, and 5 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?