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     7 years ago 

    If you write that 2+5=12, i don't think i'm the one who's failing

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     7 years ago 

    You add the two numbers above it to the total. It's like a running total. 1+4+2+5= 12

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       7 years ago (edited)

      See above.

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         7 years ago 

        Spoilers!!!

        The answer is 45

        1+4=5 => 1×(4+1)=5
        2+5=12 => 2×(5+1)=12
        3+6=21 => 3×(6+1)=21
        5+8=x => 5×(8+1)=x
        so x=45 :)

        the rule followed above is 1st number multiplied by (2nd number + 1)

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         7 years ago 

        My answere is 34, I'm prety sure about that...

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         7 years ago (edited)

        I came up with 45 as well
        I came up with the answer by:

                      1 + 4 = 5 +(2 +5) = 12 +(3+6)=21 +(4+7)= 32+ (5+8)= 45

        Thanks for fun.

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           7 years ago (edited)

          Thanks.

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