The above puzzle has recently appear on an elementary school entrance example in Hong Kong.
The logic puzzle was created two decades ago by puzzle author David Bodycombe after he saw a car park in Portugal, according to The Guardian.
For anyone who is having trouble figuring it out, the solution is actually pretty simple. The answer is below.
Figuring out the solution doesn’t involve any mathematics. Simply turn the puzzle upside down.
The numbers in the spaces ascend sequentially. So the answer in this case is 87.
