Puzzle Master - Next Puzzle - Tea or Coffee after Dinner?

Replies

• 

  Saandeep Sreerambatla

  I think its X.
• 

  Ramani Aswath

  Statements 2, 3 and 4 cannot be simultaneously true because they are mutually exclusive logically. The puzzle makes sense only if 2, 3 or 4 are considered individually. That is, the result depends on who orders first.
  
  X orders coffee first, subsequently both Z and Y order either coffee or tea depending on Z's choice. If X orders tea first, then Y and Z may order either.
  This means we have X-coffee or tea, Y- tea or coffee and Z tea or coffee.
  tea. Z now orders coffee or tea while X orders Tea or coffee Y orders coffee first. If Z now orders coffee then X orders tea, else Z orders tea and X orders coffee. Y orders c
  We have Y-coffee or tea, Z- coffee or tea and X-tea or coffee.
  
  Z orders tea first, then Y orders tea or coffee and X orders tea or coffee. If Z orders coffee first then Y orders tea or coffee and X orders tea or coffee.
  We have Z - coffee or tea, Y-coffee or tea and X -coffee or tea.
  
  This means that they all may order tea or coffee. No one has only the same drink.
  
  There seems to be no unique solution.
• 

  born_star16

  There are 6 cases.
  
  X Y Z
  I coffee coffee coffee
  II coffee tea tea
  III tea coffee coffee
  IV tea tea tea
  V tea coffee tea
  VI tea tea coffee
  
  
  Then, from 3rd Point, Cases I and V are eliminated and, from 4th Point, Cases II and V are eliminated.
  
  
  So X always orders the same drink (tea) after dinner.
• 

  Radhika Deshpande

  born_star16

  There are 6 cases.
  
  X Y Z
  I coffee coffee coffee
  II coffee tea tea
  III tea coffee coffee
  IV tea tea tea
  V tea coffee tea
  VI tea tea coffee
  
  
  Then, from 3rd Point, Cases I and V are eliminated and, from 4th Point, Cases II and V are eliminated.
  
  
  So X always orders the same drink (tea) after dinner.

  Yes the logic and answer is correct.