87 is the common answer to this, but it has to be flipped upside down, so I consider L8 more correct.
If you flip the numbers horizontally by 180 degrees:
86 87 88 89 90 91
You see that the blank spot is 87, counting from 86 to 91. However, you need to flip it around, so it becomes L8.
1 Comment on "Fill in the Missing Element"
Ramon says
November 29, 2018 @ 07:24
The need to flip it back is a cool twist.
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