Question 1204708
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Here's the list of possible digits when using a digital display (think of an alarm clock)
Another term for it is called <a href="https://en.wikipedia.org/wiki/Seven-segment_display">seven-segment display</a> because we need at most 7 lines to form the digits 0 through 9
<img src = "https://i.stack.imgur.com/kfYal.png">
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<a href="https://codegolf.stackexchange.com/questions/151125/mirrored-digital-clock">https://codegolf.stackexchange.com/questions/151125/mirrored-digital-clock</a>


0,1, and 8 can be rotated 180 degrees about the center and the digits won't change (as mentioned in the instructions).
If we rotated 6, then it turns into 9, and vice versa.


Rotating a 2 will have it land on itself. Meaning it won't change. Same goes for 5.



Here are all of the ambiguous digits
0, 1, 2, 5, 6, 8, 9


Here are the non-ambiguous digits
3, 4, 7


There are 3 items in that non-ambiguous set of digits.
Having 5 such digits, where repeats are allowed, would give us 3^5 = <font color=red>243</font> non-ambiguous zip codes.
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