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Question

Select the Venn diagram that best represents the relationship between the following classes.
Ant, Insect, Fox, Mammal

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is

Analyzing Class Relationships for Venn Diagram

To determine the correct Venn diagram, we need to understand the relationship between the given classes: Ant, Insect, Fox, and Mammal.

  • Ant and Insect: An ant is a specific type of insect. Therefore, the set 'Ant' is entirely contained within the set 'Insect'.
  • Fox and Mammal: A fox is a specific type of mammal. Therefore, the set 'Fox' is entirely contained within the set 'Mammal'.
  • Insect and Mammal: Insects and mammals are distinct biological classes. They do not overlap; no insect is a mammal, and no mammal is an insect. The sets 'Insect' and 'Mammal' are disjoint.

Identifying the Correct Venn Diagram Structure

Based on the relationships:

  • The 'Insect' set must be separate from the 'Mammal' set.
  • The 'Ant' set must be completely inside the 'Insect' set.
  • The 'Fox' set must be completely inside the 'Mammal' set.

The Venn diagram that correctly represents this is one with two separate large circles (Insect and Mammal), each containing a smaller, distinct circle (Ant inside Insect, Fox inside Mammal).

Option 3 visually matches this structure, showing the disjoint nature of Insects and Mammals, with Ants as a subset of Insects and Foxes as a subset of Mammals.

The correct diagram is represented by Option 3:

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Important Questions from Venn Diagram

  1. In the following figure, square represents Priests, triangle represents singers, circle represents Therapists and rectangle represents Indians. Which set of of letters represents Indians who are not priests?

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