In a class of 30 students, 14 students take bournvita, 13 students take coffee, 12 students take tea, 4 students take all the three Bournvita, coffee and tea, 5 students take none of the three drinks. Find the number of students taking exactly one of the three drinks.
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In a hostel, there are 30 students, 9 of them take tea but not coffee. If 3 of them who take coeffee also start taking tea, 12 students would be taking both tea and coffee. How many students do not take tea ?
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