Question
There were 36 pupils in a class. 28 of them got an A in a Science test. 19 of them got an A in a Chinese test. Every pupil got at least an A in the Science test or Chinese test. How many of them got an A in both the Science and Chinese tests?
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There were 36 pupils in a class. 28 of them got an A in a Science test. 19 of them got an A in a Chinese test. Every pupil got at least an A in the Science test or Chinese test. How many of them got an A in both the Science and Chinese tests?