Minute Mystery: The Odd One Out

Bite-sized brain teaser to solve in a minute or less.

 

 

The Odd One Out

Category: Number Logic

Which number doesn’t belong?

2, 3, 5, 7, 11, 13, 15, 17

 

 

Solution

15 - it’s the only number that isn’t prime.

 

 

Our Minute Mysteries are released every Sunday.

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Find more full-size mystery games with:
+ A longer playtime for hours of fun
+ Life-like evidence, such as newspaper clippings, cryptic letters, suspects' statements, and more
+ Engaging clues to test your problem-solving skills

 

 

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