|=|, |=|, -|, |=, |=, |-|, =|, ..., ...

What are the last two symbols in this sequence?

Sorry for being so unclear. There's how I'd draw those symbols:

The pic is just for analogy, you still should end the original sequence, not this one.


Duplication (first and second, forth and fifth) is not something you should look at in first place (not the primary logic).

Hint 2:

You meet these symbols in everyday life.

Hint 3:

Try to draw all the symbols on the paper, without spaces inside each symbol (i.e., each symbol with one solid line)

  • $\begingroup$ Does "last" actually mean "last"? That is, with those two symbols added is the sequence complete, or could it be continued on further? (Feel free not to answer; but if you intended "last" as a hint then it would be nice to know.) $\endgroup$
    – Gareth McCaughan
    Commented Jun 8, 2016 at 16:07
  • $\begingroup$ @Gareth Nice question; the sequence could be continued, though probably not uniquely. $\endgroup$
    – nicael
    Commented Jun 8, 2016 at 16:10
  • $\begingroup$ The hints have been updated, anyone? $\endgroup$
    – nicael
    Commented Jun 8, 2016 at 17:06
  • $\begingroup$ so this sequence(7+2 symbols) is unique, and after 9 symbols it can be continued not uniquely? $\endgroup$
    – smriti
    Commented Jun 8, 2016 at 18:17
  • $\begingroup$ @smriti Sort of, but after it's arguable, so I didn't require more than two symbols. $\endgroup$
    – nicael
    Commented Jun 8, 2016 at 18:18

2 Answers 2


These are

the top halves of digits from 9 downwards on a 7-segment display

so the next two are, in the notation used here,

=|, |.

  • $\begingroup$ Yeeeey! That's great, it wasn't that clear without a pic... $\endgroup$
    – nicael
    Commented Jun 9, 2016 at 8:38

My guess is: =| , |-

I think the sequence goes like: 2 same symbols, one unique, 2 same, one unique, 2 same, one unique.

Since the next have to be the same as the previous i just copy it. And the next i assume is this one |- because it's the opposite of the first unique element and they both completes to |=|.

  • $\begingroup$ Interesting, but it's not the rule the sequence follows (I didn't even think of that repetition). $\endgroup$
    – nicael
    Commented Jun 8, 2016 at 14:54
  • $\begingroup$ Eh, I was sure the duplication matters :) So about to the third hint - does this mean I should draw the double horizontal lines (=) as one thicker line, and the single line as one thinner? $\endgroup$
    – zstefanova
    Commented Jun 9, 2016 at 6:55
  • $\begingroup$ I've clarified the question :) $\endgroup$
    – nicael
    Commented Jun 9, 2016 at 7:17

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