in a class of 80 students,40 study physics, 48 study mathematics and 4 4 study...
in a class of 80 students,40 study physics, 48 study mathematics and 4 4 study...
in a class of 80 students,40 study physics, 48 study mathematics and 4 4 study chemistry. 20 study physics and mathematics. 24 study physics and chemistry and 32 study only two of the three subjects. if every student studies at least one of the three subjects, find
1 . the number of students who study all the three subjects.
2 . the number of students who study only mathematics and chemistry?
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