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Arm Appraisal III (Posted on 2012-12-21) Difficulty: 2 of 5
A distant planet is inhabited by creatures having more than two arms. The ones with an even number of arms are the knights who always tell the truth; the ones with an odd number of arms are the liars who always speak falsely.

Four inhabitants are conversing amongst themselves:
  • The green one says, "I have ten arms. The blue one has only eight arms."
  • The blue one says, "I have ten arms. The green one has nine arms."
  • The red one says, "The blue one has ten arms. I have eleven arms."
  • The striped one says, "None of the four of us except myself have ten arms."
Which of the four inhabitants has exactly ten arms?

No Solution Yet Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Correct solution | Comment 3 of 5 |
(In reply to Correct solution by Math Man)


I've modigied my post to direct readers here.

  Posted by Charlie on 2012-12-22 09:58:13
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