There are three people (Alex, Brook and Cody), one of whom is a knight, one a knave, and one a spy.

The knight always tells the truth, the knave always lies, and the spy can either lie or tell the truth.
Alex says: "Cody is a knave."
Brook says: "Alex is a knight."
Cody says: "I am the spy."

Who is the knight, who the knave, and who the spy?
Read more at http://www.m4maths.com/placement-puzzles.php?SOURCE=TCS&TOPIC=Logical%20Reasoning&SUB_TOPIC=Blood%20Relations#8BvI8WSerdgvSOW1.99

• Alex is a knight and as knight always say the truth so cody is knave and brooks a spy..
• 9 years agoHelpfull: Yes(18) No(1)
• Alex--->Knight---alwaz says T
  Cody--->Knave---alvaz says F
  Brooke--->Spy---can say T or F
  
  by the above three...check the condition given in the ques...
  
• 9 years agoHelpfull: Yes(12) No(2)
• Alex is knight.(always truth) ---->as he told cody is knave
  Cody is knave(always false)----->as he told i am the spy
  Brooke is spy(either lie or tell the truth)-------> as he told alex is knight.
• 9 years agoHelpfull: Yes(2) No(0)
• alex - knight. brook - knave. cody - spy.
• 9 years agoHelpfull: Yes(1) No(5)
• @ KV CHOWDARY
  krishnagade18@gmail.com
• 9 years agoHelpfull: Yes(1) No(0)
• Alex-knight
  Cody-knave
  Brook-spy
• 9 years agoHelpfull: Yes(0) No(1)
• Alex->Knight and always says T
  Brooke->spy and can say True or False
  Cody->Knave and always says F
• 9 years agoHelpfull: Yes(0) No(0)
• Alex is knight.
  Cody is knave.
  Brook is spy.
• 9 years agoHelpfull: Yes(0) No(2)
• what if ?
  
  Alex - knave
  Brook - spy
  Cody - knight
• 9 years agoHelpfull: Yes(0) No(1)
• alex-knight
  brook-spy
  cody-knave
• 9 years agoHelpfull: Yes(0) No(1)
• Alex - knight
  Brook - knave
  Cody - spy
• 6 years agoHelpfull: Yes(0) No(0)