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I think I just came upon a secret reception. I was just about to go in when a guard stopped me and asked for my number. I wasn't sure how the system worked but I was able to see the checklist of attendants. One code number was missing and I used it. Basically the checklist was like this;enter image description here Do you know what my attendant code is?

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Your code was

258

The three numbers at the top of each box are the codes for the checklist, as shown by your missing numbers replaced with ?s.
Underneath each code is a blank keypad shape with the numbers 1, 2, and 3

These represent the first, second, and third keys pressed on a keypad. The keypad looks like this:
1 2 3
4 5 6
7 8 9
we know the numbers on the keypad from looking at the other attendant codes, 2 is the first number pressed in 249, 5 is the first number pressed in 573, and 8 is the first number pressed in 819.

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  • $\begingroup$ I mean I was expecting a fast answer but I guess that was like taking candy from a baby. I can't even mark it as an answer because of 2 minutes limit. Good job. $\endgroup$ – KeithN Nov 2 '16 at 19:25
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    $\begingroup$ @KeithN is the 4th image supposed to be 849? Or am I misunderstanding the pattern? $\endgroup$ – Ryan Smith Nov 2 '16 at 19:26
  • $\begingroup$ @RyanSmith I corrected it. Thank you. $\endgroup$ – KeithN Nov 2 '16 at 19:34

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