Mathematics, 27.05.2020 03:02 jordivivar74
In high-school 135 freshmen were interviewed.
Thirty-five of them took PE, 42 took BIO, 60 took ENG, 10 took PE and BIO, 15 took PE and ENG, 7 took BIO and ENG, 5 took all three subjects.
a). How many students took none of the three subjects?
b). How many students took PE but not BIO?
c). How many students took ENG but not both BIO and PE?
d). How many students did not take ENG or BIO?
e). What is the probability that a randomly-chosen student from this group did not take exactly two subjects?
Answers: 3
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In high-school 135 freshmen were interviewed.
Thirty-five of them took PE, 42 took BIO, 60 too...
Thirty-five of them took PE, 42 took BIO, 60 too...
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