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Logic Brain Teaser : Pick A Conclusive Statement

Braingle’s Daily Brain Teaser for Nov 07, 2020

Eli and four of his friends either always lie or always tell the truth. His friends made the following statements:

Alice: Daniel or Eli is lying

Barry: Eli, Daniel, & Callie are telling the truth

Callie: Daniel is lying

Daniel: Callie and/or Barry is lying

Eli said one of the following things:

Alice & Barry are opposites (one lies and one tells the truth)

Alice & Daniel are opposites

Barry & Callie aren’t opposites

Callie & Myself aren’t opposites

If you knew which of the four statements was spoken by Eli, then you would know who was lying and who was telling the truth. What did Eli say? Who is lying?

Check for the answer.

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