.
For the first question.
All questions of this kind assume that you are able to read the thoughts
inside the head of the person who created these problems.
Surely, they are not Math problems.
Reading thoughts inside the head of other people in not Math . . .
This time, fortunately, I can read these thoughts (because I know the answer for advance . . . )
The key is to approach a mirror to the upper line of these numbers and to read the reflected numbers in the mirror.
Then you will clearly see the row of numbers 91, 90, 89, 88, X, 86.
At this point, you may conclude that X = 87 is the number of the parking spot.
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All problems of this kind disgust true mathematicians.
They are PUZZLES --- not Math problems.
The difference is as between an elephant and a mouse.
