Question : Directions: Select the set of classes the relationship between which is best illustrated by the Venn diagram given below.
Option 1: Brothers, Fathers, Uncles
Option 2: Farmers, Sisters, Brothers
Option 3: Farmers, Uncles, Males
Option 4: Mothers, Females, Nephews
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Correct Answer: Farmers, Uncles, Males
Solution :
Let's check each option –
First option:
Brothers, Fathers, Uncles; some brothers can be fathers as well as uncles. It means all of them have a common area. Therefore, this is incorrect.
Second option:
Farmers, Sisters, Brothers; some sisters and brothers can be farmers, but there is no relation between sisters and brothers. Therefore, this is incorrect.
Third option:
Farmers, Uncles, Males; all uncles are males, so the circle of uncles lies completely inside the circle of males. Some males and uncles can be farmers so, the circle of the farmer has a common region between uncles and males.
Fourth option: Mothers, Females, Nephews; All mothers are females but the nephew is not related to the mother and females. Therefore, this is incorrect.
Hence, the third option is correct.
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