Delhi Police Constable
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Delhi Police – Logical Venn Diagram / तार्किक वेन आरेख

🎙 Concept / आधार

Logical Venn Diagram में दो या अधिक वस्तुओं/समूहों के बीच relation को diagram द्वारा दिखाना होता है। Delhi Police में mostly simple relations पूछे जाते हैं: subset, overlapping, disjoint sets.

✔ Types of Relations

✔ Solved Examples

Example 1:
Which diagram represents: Teacher, Man, Human? Solution: Teacher ⊂ Man ⊂ Human → Concentric circles [Teacher inside Man, inside Human]
Example 2:
Boys, Students, Players Some boys are students, some players; sets overlap → Three overlapping circles
Example 3:
Cow, Animal, Goat Cow and goat are animals but different → Cow ⊂ Animal → Goat ⊂ Animal No overlap between cow & goat
Example 4:
Pen, Pencil, Stationery Both pen & pencil are stationery → Pen ⊂ Stationery → Pencil ⊂ Stationery No overlap directly

✔ Practice MCQs

  1. Doctor, Male, Father
    Solution: Doctor can be father or male → overlapping sets Ans: Three circles overlapping
  2. Apple, Fruit, Mango
    Ans: Apple ⊂ Fruit; Mango ⊂ Fruit No overlap
  3. Parrot, Bird, Bat
    Parrot bird; Bat is mammal Ans: Parrot ⊂ Bird, Bat separate
  4. Singer, Dancer, Artist
    Overlapping sets (some are both) Ans: Three overlapping circles
  5. Girl, Student, Engineer
    All can overlap Ans: Overlapping circles
  6. Bus, Vehicle, Aeroplane
    Both bus & aeroplane are vehicles Ans: Bus ⊂ Vehicle; Aeroplane ⊂ Vehicle
  7. Dog, Animal, Car
    Dog ⊂ Animal; Car separate Ans: One inside animal, one separate
  8. Men, Women, Persons
    Men ⊂ Persons; Women ⊂ Persons No overlap
  9. Table, Chair, Furniture
    Both table & chair are furniture Ans: two subsets inside furniture
  10. Triangle, Polygon, Square
    Triangle ⊂ Polygon; Square ⊂ Polygon Ans: subsets

🔥 Challenge Question

Delhi, India, Asia के लिए सही Venn Diagram क्या होगा?

Delhi ⊂ India ⊂ Asia
Final: Nested circles

Motivation: Venn Diagram scoring topic है — बस relation समझना है। 🚓🔥

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