Mathematics, 18.06.2021 02:40 sameh0425
In a certain school, 80 pupils study both Biology and History, 35 study neither subject, 45 study only
Biology and 60 study only History. Find the probability that a randomly selected pupil
a) studies at least one of the two subjects
b) studies History
Answers: 1
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In a certain school, 80 pupils study both Biology and History, 35 study neither subject, 45 study on...
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