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Annoying Math Puzzle #1

Why EVERYONE is wrong about this post. First, I will let you off the hook by saying I got it wrong at first. I love math but I am not particularly skilled at math.

I don’t particularly like this puzzles because they are almost always not about the math but are more about distraction and attention span. My attention span is particularly low so I usually get them wrong.

Here is the text posted with the image

Deals a deal! I lost to XXX XXX
What's the total of the last column? Post your response only, not your math. If you guess and answer wrong, you have to re-post the same and to whom you lost to.
Comment your answer! If your wrong you need to repost and I'll send you the answer key

First here are the values:

  • Man = 5
  • Weight = 2
  • Shoe = 5

The Correct Answer

First, let’s look at the standard “correct” answer:

10 + 10 + 10 = 30
 5 +  5 +  5 = 20
 4 +  4 +  5 = 13
 5 + 19 x  2 = 43
             ----
              106

To get to this answer you have to notice that the man is wearing shoes and weights. The rest is following PEMDAS.

Technically Correct Answers:

A good friend of mine pointed out that the instructions simple state to Total the last column. As the instructions do not explicitly state to perform operations on the fourth row we end up with this.

10 + 10 + 10 = 30
 5 +  5 +  5 = 20
 4 +  4 +  5 = 13
 5 + 19 x  2 =  ?
             ----
             63 + ?

I took it as tep further to be even more techincally correct :

Incomplete Answers ( last row only ):

Adding up only the final row:

5 + 19 x 2 = 43

Not noticing the Shoes or the Weights on the Man

and also not noticing the instructions to Total the last Column

        5 + 5 * 2 = 15

Using Two Weights on last line

      10 + 10 + 10 = 30
       5 +  5 +  5 = 20
       4 +  4 +  5 = 13
       5 + 19 +  2 = 26
      10 + 10 + 10 = 30
         5 + 5 + 5 = 20
         4 + 4 + 5 = 13
         5 + 5 x 4 = 40
                  -----
                    103

Missing the Multiplication on Last :Line

      10 + 10 + 10 = 30
       5 +  5 +  5 = 20
       4 +  4 +  5 = 13
       5 + 19 +  2 = 26  
                   ----
                     89

Using addition instead of multiplication on the last line.
And using mistaking one weight for two.

      10 + 10 + 10 = 30
       5 +  5 +  5 = 20
       4 +  4 +  5 = 13
       5 + 19 +  4 = 26  
                   ----
                     93

And the most convoluted answer:

Re-moving presumption of addition, considering each item as a number.

Shoe = 3.16227766, ( 3.16227766 X 3.16227766 ) = 10
Person = 5
Lace = 1.414213562

3.16227766 + ( 1.414213562 X 5 X 1.414213562 / 3.16227766 ) x 2 = 72.486832952
63 + 9.486832952 =  72.486832952

Please feel free to comment below as to why I am wrong or if you have an even more convoluted answer.

2 thoughts on “Annoying Math Puzzle #1

  1. I think the question wasn’t written mathematically correct Iris Imamura. Okay, if we’re doing the math of each row and figure out the values for each item. I don’t see how the man in the last row is 19… it don’t logically make mathematical sense. He ought to be 23.

    And for the fourth row (last row) the man in the second column has on weight bands as well as holding a weight band in each hand and shoes on each feet. So I equated him to being 23, not 19. Thus for the final row, I got 51.
    Adding the final column, the total
    63 + 51 = 114

  2. It appears that the question just asked to find the total of the last column. In mathematics, rows are going across from left to right. Columns are from top to bottom.

    We aren’t asked to do the math for each row. But to do the math for the last column.

    There are a total of four columns. And a total of four rows. In the fourth row, when we look at the dude, he’s holding a shoelace in each hand, or weight thing, shoes on each feet, and he has wristbands on each hand. I don’t think the man is 19, but 23.

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