Mathematics, 05.03.2021 07:30 avaleasim

In a survey of 150 students, 70 were taking mathematics and 20 were taking psychology. a) What is the least number of students who could have been taking both courses?
b) What is the greatest number of students who could have been taking both courses?
c) What is the greatest number of students who could have been taking neither course?
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a) The least number of students who could have been taking both courses is
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