A group of 50 students went on a tour in Palawan province. Out of the 50 students, 24 joined the trip to Coron; 18 went to Tubbataha Reef; 20 visited El Nido; 12 made a trip to Coron and Tubbataha Reef; 15 saw Tubbataha Reef and El Nido; 11 made a trip to Coron and El Nido; and 10 saw the three tourist spots. How many of the students went to Tubbataha Reef only?

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Answers

2014-08-12T20:19:00+08:00