Lite |

Category: | Logic |

Submitted By: | Genius39 |

Fun: | (2.69) |

Difficulty: | (1.67) |

7 + 7 = 2

8 + 8 = 4

8 + 5 = 1

6 + 9 = 3

10 + 11 = 9

In this sense, what is the value of 4 + 9?

Show Hint | Show Answer |

Posted by theriddler | 05/19/15 |

I often automatically figure such problems, yet I was as baffled by the number system as if it had been devised by alien intelligence. Until I read the clue. Good one! | |

Posted by lelrod | 08/13/15 |

Without reference to time, the answer is "Sum mod 12", or the remainder of the sum after division by 12. | |

Posted by Snowdog | 10/05/16 |

Good teaser. I needed the hint. | |

Posted by JimShorts | 11/16/16 |

Like lelrod, I got the answer just using math, I didn't think of the time connection. My solution was simply that the value of each number was its distance from 6. So the value of 8 is 2, since it's 2 more than 6, the value of 5 is -1, since it's 1 less than 6, etc. I guess these are just all different ways of saying the same thing! Nice teaser! | |

Posted by TheRiddleTroll | 12/11/16 |

Whoever wrote this teaser needs to learn to speak English properly. Other than that it was a great teaser. | |

Posted by TheRiddleTroll | 12/11/16 |

It doesn't belong in the logic category though. |

Most Popular | Hardest | Easiest