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Seven people R, S, T, U, V, W and X live on a seven-floor building, one person per floor (floor 1 is the lowest and floor 7 the highest). X lives on floor 1. T lives on floor 7. W lives on floor 4. U lives immediately above W. There are exactly three floors between S and V, and S lives above V. How many floors are there between W and S?

Competition practicePuzzles & Seating
  • AThree
  • BZero
  • CTwo
  • DOne

Step-by-Step Solution

W is on floor 4 and S on floor 6, so only floor 5 lies between them = one floor.
Answer: D) One

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