Question 193
There are three intersecting circles representing English knowing persons, sportsman and persons who are working as policeman. Different regions so obtained in the figure are marked 1, 2, 3, 4, 5, 6 and 7.
If you select persons, who do not know English and are not policeman, which of the region is to be selected ?
Solution
Persons knowing English = 1 + 2 + 6 + 7
Police man = 4 + 5 + 6 + 7
Regions that represent both persons knowing English and policeman = 1 + 2 + 4 + 5 + 6 + 7
=> Region in which neither person knows English nor is a policeman = 3
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