Floor Puzzles — Who Lives Where

Floor puzzles — कौन किस floor पर

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Floor Puzzles — Who Lives Where

  • Puzzles
  • Floor Puzzles — Who Lives Where
नमस्ते दोस्तों! MeraExam में आपका स्वागत है। आज का topic है — Floor puzzles — कौन किस floor पर। मैं promise करती हूँ, आज के बाद ये topic आपको आसान लगेगा। शुरू करें?
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Learning Objective

Assign people to building floors using above/below clues and a vertical table.

🎯 Learning Objective

Assign people to building floors using above/below clues and a vertical table.

💡 Concept

  • Draw floors as a vertical table — top floor on top, floor 1 (lowest) at the bottom
  • 'Above' need not mean immediately above; 'immediately above' = the very next floor
  • Fill exact-floor clues first, then place immediate-pairs as vertical blocks
  • People between floors a and b = |a − b| − 1, so 'two people between' means a gap of 3 floors
  • If a clue allows 2 floors, keep both possibilities and cancel one with a later clue

🧮 Key Formulas

People between floors a and b = |a − b| − 1

✏️ Easy Example

Q. A, B, C, D and E live in a five-floor building (floor 1 lowest, floor 5 top). C lives on the top floor. E lives on floor 2 and D lives below E. A lives immediately above B. Who lives on floor 4?

  1. C = 5, E = 2, D below E → D = 1
  2. A just above B fits only 4-3 → B = 3, A = 4
  3. Floor 4 = A

Answer: A

🇮🇳 Real-Life Example

Railway quarters in any junction town — 'Sharma ji stays just above Verma ji, guard sahab on the ground floor'. Floor puzzles are colony talk written as a table.

📝 Exam-Level Example

Q. J, K, L, M, N and O live on six floors of a building (floor 1 lowest, floor 6 top). K lives on floor 2. Exactly two people live between J and K, and J lives above K. L lives immediately above M. N lives on an even-numbered floor. Who lives on the top floor?

  1. K = 2; two people between with J above → J = 2 + 3 = 5
  2. L-above-M block fits only floors 4-3 → M = 3, L = 4
  3. N needs an even floor → N = 6, O = 1
  4. Top floor = N

Answer: N

🪄 Memory Trick

Convert every between-clue into a number instantly: 'two people between J and K' means J and K differ by 3. Numbers slide into a table faster than words.

⚠️ Common Mistakes

  • ❌ Reading 'above' as 'immediately above'
  • ❌ Numbering the top floor as 1 — floor 1 is the lowest unless stated
  • ❌ Counting 'two between' as a difference of 2 instead of 3

🏆 Exam Tips

  • ✅ Write floor numbers 6 down to 1 on the page before reading clues
  • ✅ Tick each clue after use and recheck all of them at the end

📌 Summary

  • Vertical table, top floor on top
  • Exact clues → blocks → leftovers
  • n people between = difference n + 1
  • Immediately above = the very next floor
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