Spot the Alien: Rob Schneider and Disco

Rules:

  1. Everyone, human or alien, likes exactly one kind of music (rock, country or disco), one actor (Jim Carrey, Adam Sandler or Rob Schneider), and one actress (Jodie Foster, Helen Mirren or Meryl Streep).
  2. Every human who likes disco also likes either Adam Sandler, Meryl Streep, or both.
  3. No human who likes country likes Jim Carrey or Helen Mirren.
  4. Every human who likes Adam Sandler also likes rock, Jodie Foster or both.
  5. No human who likes Rob Schneider likes disco or Jodie Foster.
  6. Every human who likes Meryl Streep also likes disco, Jim Carrey, or both.

Which five of these people are aliens?

  • Alex likes rock and Adam Sandler.
  • Bonnie likes rock and Jodie Foster.
  • Chip likes disco and Helen Mirren.
  • Deedee likes Rob Schneider and Meryl Streep.
  • Ethan likes disco and Jim Carrey.
  • Fiona likes country and Rob Schneider.
  • George likes Adam Sandler and Meryl Streep.
  • Hannah likes Jim Carrey and Jodie Foster.
  • Ian likes Adam Sandler and Helen Mirren.
  • Jenny likes country and Meryl Streep.

Scroll down for the answers!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

Answers:

Suppose Chip is human. By rule 2, since he likes disco then he must like either Adam Sandler or Meryl Streep. He likes Helen Mirren, not Meryl Streep, so he must like Adam Sandler. But by rule 4, if he likes Adam Sandler then he must like rock music or Jodie Foster, and he likes neither. Therefore, Chip is an alien.

Suppose Deedee is human. By rule 6, since she likes Meryl Streep then she must like disco or Jim Carrey. She likes Rob Schneider, not Jim Carrey, so she must like disco. But by rule 5, since she likes Rob Schneider, she can’t like disco. Therefore, Deedee is an alien.

Suppose Fiona is human. By rule 3, since she likes country then she can’t like Helen Mirren. By rule 5, since she likes Rob Schneider she can’t like Jodie Foster. Therefore, she must like Meryl Streep. But by rule 5, since she likes Meryl Streep she must like disco or Jim Carrey, and she likes neither. Therefore, Fiona is an alien.

Suppose George is human. By rule 4, he must like rock music or Jodie Foster. He likes Meryl Streep, not Jodie Foster, so he must like rock music. But by rule 6, since he likes Meryl Streep he must like disco or Jim Carrey, and he likes neither. Therefore, George is an alien.

Suppose Jenny is human. By rule 6, since she likes Meryl Streep then she must like disco or Jim Carrey. She likes country music, not disco, so she must like Jim Carrey. But by rule 3, since she likes country music she can’t like Jim Carrey. Therefore, Jenny is an alien.

The remaining people could be either human or alien; however, since we are given that only five in the group are aliens, the rest must be human.

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The puzzlemonster. Lifelong puzzle maker, animal lover, total nerd. Husband to Android developer.

About Eric

The puzzlemonster. Lifelong puzzle maker, animal lover, total nerd. Husband to Android developer.

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