Brain Teasers
Hamburger Cook-Off
In the hamburger cook-off, the finals had just begun. However, one person in the contest had a store-bought hamburger. If the one who has the store-bought hamburger is lying and the innocent people are telling the truth, who is lying?
John: It wasn't Steven.
Nick: It wasn't Greg.
Steven: It wasn't Nick.
Kevin: It was John.
Greg: It was Kevin.
John: It wasn't Steven.
Nick: It wasn't Greg.
Steven: It wasn't Nick.
Kevin: It was John.
Greg: It was Kevin.
Answer
Kevin had the store-bought hamburger. The way to determine this is by looking first at Steven's statement. If "it wasn't Nick" is false, Steven must be lying, which means he's guilty, and Nick is also guilty. Since only one person is guilty, Nick and Steven made their hamburgers and are innocent. Because of this, John is also innocent. Kevin says it was John, which is false, since John has been cleared. Greg must also be telling the truth and is innocent.Hide Answer Show Answer
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