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in a class of 60 students 30 like maths 25 like physics 30 like chemistry. if 10 like both physics and maths 5 like maths and chem and 5 like phy & chem and 3 like all the subjects. find student like none of subject if 100 students were surveyed

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  1. It is a common problem in set theory, however, it is not so common in a class of 60 students, 100 of them were surveyed.

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    bobpursley
  2. 41

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