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In a class of 55 students, the number of students studying different subjects are 23 in Mathematics, 24 in Physics. 19 in Chemistry, 12 in Mathematics and Physics, 9 in Mathematics and chemistry, 7 in Physics and Chemistry and 4 in all the three subjects. The number of students who have taken exactly one subjects is

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answered Jun 24, 2014 by thanvigandhi_1
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