UPSC CDS I 2025 Mathematics Paper

Number of Pucca Houses =(110∕360)×1,20,000
⇒ Number of Pucca Houses =(11∕36)×1,20,000
⇒ Number of Pucca Houses =11×(120000∕36)
⇒ Number of Pucca Houses =110000∕3
Population Living in Pucca Houses =(60∕360)×21,00,000
⇒ Population Living in Pucca Houses =(1∕6)×21,00,000
⇒ Population Living in Pucca Houses =3,50,000
Average Persons per Pucca House = Population Living in Pucca Houses ∕ Number of Pucca Houses
⇒ Average Persons per Pucca House =350000∕(110000∕3)
⇒ Average Persons per Pucca House =(350000×3)∕110000
⇒ Average Persons per Pucca House =(35×3)∕11
⇒ Average Persons per Pucca House =105∕11
⇒ Average Persons per Pucca House ≈9.5454...