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Best Posts in Thread: Find the missing number

  1. Dave_Hounddriver

    Dave_Hounddriver DI Forum Luminary Highly Rated Poster

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    My solution is practical and simple. An engineer would make it complicated, such as:

    5 = 2²+1
    10 = 3²+1
    ? = 26 = 5²+1
    50 = 7²+1
    122 = 11²+1

    Basically, the pattern is n²+1 where n is a Prime number (2,3,5,7,11..)
    So, 5²+1 = 26
     
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  2. Dave_Hounddriver

    Dave_Hounddriver DI Forum Luminary Highly Rated Poster

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    Best Answer
    360 - 122 - 50 - 5 - 10 = 173
    On the basis of 360 degrees in a circle and the segments are not drawn to scale
    [​IMG]
     
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