In a class,100 students,50 study chemistry,60 study biology and 29 study physis.each student studies at least one of the three subjects.12 study biology and chemistry only,15 study biology and physis,7 study physis and chemistry but not biology 33 study biology only and 5 study three subject.. illustrate the above information on a venn diagram .. How many student study,exactly two subjects,only one subject
can't do diagrams here.
where do you get stuck?