One needs to find the number under the car.

A picture of some parking spaces from the top down, appearing to be numbered "16, 06, 68, 88, ??, 98"

Source: unknown

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    $\begingroup$ Is this original??? I have seen it elsewhere long time ago, it was a classic question for primary schools/ elementary interviews... $\endgroup$ Oct 10, 2018 at 8:01
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    $\begingroup$ If the source I added earlier today is not the one where you originally found it then you need to provide one you think is satisfactory. This link was the earliest I could find on the web (and was linked to by several other online references), although - clearly - the image is derived from a physical paper of some kind that has been scanned in somewhere. Adding this link earlier today saved this question from being closed by some late 'no attribution' votes-to-close. I advise you to add a source, even if you are unable to find the source. $\endgroup$
    – Stiv
    Feb 7, 2023 at 20:09
  • $\begingroup$ @Stiv, thank you for clarification. The image I think comes from a school test or something like this. I'm not sure. But i'm sure I will not be able to find it's source now. This probably sounds stupid, but I don't want my post/question to contain false information, if the only other option is to close it, then so be it. Meanwhile, I think it must be appropriate for this SE to accept question with unknown authorship and source. $\endgroup$
    – klm123
    Feb 8, 2023 at 13:19

3 Answers 3


If you look at the numbers...

...upside down, they read 86, __, 88, 89, 90, 91. The number that fits this pattern is, of course, 87.

Therefore, the space as the picture is currently viewed should be filled in with


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    $\begingroup$ I am conflicted over whether to upvote this. It made me laugh. You have plenty of rep, so the positive comment will have to do. $\endgroup$ Jun 27, 2014 at 4:17
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    $\begingroup$ L8 was my answer also! :) $\endgroup$
    – justhalf
    Jun 27, 2014 at 10:27
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    $\begingroup$ Just one comment. Everything you said here is true. But you bolded L8 like it is the answer, meanwhile it is not, since the questions asks for a number of the parking slot, not "what is written there?". $\endgroup$
    – klm123
    Jun 27, 2014 at 11:16
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    $\begingroup$ You can probably tell that this answer was intended to be mostly facetious. $\endgroup$
    – user88
    Jun 27, 2014 at 14:59
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    $\begingroup$ It hurts when a user earns 700 rep for a joke, while others post lengthy answers and earn just 50-60. | | No, just kidding, go ahead and enjoy your rep. $\endgroup$ Dec 21, 2015 at 15:44

I believe the most obvious answer is:

There is a usual sequence of numbers, we're just looking at it in the wrong direction. The numbers of the parking spots must be viewed from the outside in, as a driver would see them, which is upside-down from the current view.

The shown numbers are: 86, ??, 88, 89, 90, 91. Therefore the answer is 87.


The number is:

87. Just rotate the image 180 degrees:

The original image rotated 180 degrees


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