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OpenStudy (anonymous):
A survey of 145 college students was done to determine their majors. Let A= the set of those majoring in art, B= the set of those majoring in biology, and C= the set of those majoring in computer science. The study revealed the following information. n(A)=45 n(B)=55 n(C)=40 n(A∩B)=12 n(A∩C)=15 n(B∩C)=23 n(A∩B∩C)=2 How many students were not majoring in any of these disciplines?
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