Prelims · 8 Mental Ability · 8.11 Ranking, seating and puzzles

8.11.7 Parallel rows: facing each other, gaps and unknown numbers of people

Number the seats of both rows from West to East once, remember that a South-facing person's right is West and a North-facing person's right is East, and treat "faces" as "same seat number in the other row".

  • APPSC Group 2 · Prelims
  • Standard level
  • 8 min read
  • Full course

Key terms

  • parallel rows
  • facing each other
  • row facing south
  • row facing north
  • diagonally opposite
  • vacant seats
  • empty seats
  • unknown number of persons
  • minimum number of persons
  • rows one behind the other
  • seat numbering west to east

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Common trapsFoundation
  5. Quick revisionFoundation

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