in a class 22 students offered mathematics, 18 students offered accountancyand 24 students offered statistics. all of them have to offer at least one of three subject of these , 11 are both in mathematics and accountancy ,13 in a accountancy and statistics and 7 have offered all the 3 subjects . find how many students are there in the class and how many students offered only mathematics.
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Students offered only Maths is 5
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