_                 _         
_  a |_  b |   c |   d     e   | f   | g |_  h     i     j/*End of Sequence*/
   a |_  b   | c |   d |_  e |   f     g |_  h     i |   j/*End of Sequence*/

You find a piece of paper in the print tray with the above characters printed. You notice that the space between the h and the i is blank. What should be placed there and why?


Read the title again.

P.S. I've used both and because I don't want to reveal what kind of a sequence it is. Will be valid here as well?


Nothing should be placed there.

It is the sequence of segments that aren't lit up when a 7-segment display goes from zero to nine. The ninth term in the sequence is nothing because all 7 segments are lit up for the digit eight.

| improve this answer | |
  • 6
    $\begingroup$ That looks like the right answer, but if so, then h is wrong and should have the middle segment shown. $\endgroup$ – Gordon K Feb 6 '16 at 15:09
  • $\begingroup$ @GordonK Sorry. I'll edit it. $\endgroup$ – ghosts_in_the_code Feb 7 '16 at 10:15

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