School-Safe Puzzle Games

The Missing Number

Can you figure out what the missing number is?

for this math puzzle, will unmask any submitted answers in a day or 2.

9 Comments to “The Missing Number”


  1. jason | Profile

    this is weird, because i came up with two variations, both resulting in the same outcome, of 14. I guess it is all relative though, since you would be subracting the numbers and multiplying by two. Add diagonally and subtract the two numbers, then multiply….


  2. notovitz | Profile

    The missing number is 14! It took me 2.5 minutes to find the pattern.


  3. suineg | PUZZLE MASTER | Profile

    I think one answer can be this: 14


    sum the diagonals then substract the value then X 2


    Explanation:


    1) 15+7= 22; 6+12= 18 –>22-18= 4 X 2= 8
    2) 6+9= 15; 2+4= 6–> 15-6 = 9 X 2= 18
    so:
    3) 11+8= 19; 5+7= 12—> 19-12= 7 X 2= 14


  4. Ryan | Profile

    The missing number is 14.


    8 = 2*((15+7) – (6+12))
    18 = 2*((6+9) – (2+4))
    14 = 2*((11+8) – (5+7))


  5. Jantar | Profile

    what about some criss-cross subtraction, addition and then doubling?
    [(15-12) + (7-6)]x2 = 8
    [(6-4) + (9-2)]x2=18
    [(11-7) + (8-5)]x2 =14
    So the answer might be 14. But somebody else might have found different patterns…


  6. RK | Profile

    Sorry, we’re having trouble with the comment system; hopefully will have it fixed soon.


  7. Codename | Profile

    the missing number is 14


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