Paper I · 9 Logical Reasoning & Analytical Ability · 9.11 Calendar and clock

9.11.2 Clock: angles, coinciding hands, mirror times and faulty clocks

The minute hand moves 6° a minute and the hour hand 0.5°, so the minute hand gains 5.5° every minute; angle, overlap, opposite and right-angle questions all come from that one gap.

  • APPSC Paper I · Paper I
  • Standard level
  • 7 min read
  • Full course

Key terms

  • clock
  • angle between hands
  • 30H minus 5.5M
  • coinciding hands
  • opposite hands
  • right angle
  • straight line
  • 65 5/11 minutes
  • mirror image
  • faulty clock
  • gaining clock
  • losing clock
  • clock striking
  • time zones
  • adding minutes

What this note covers

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

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