perplexus.info :: Numbers : Upside Down LCD Display

Upside Down LCD Display (Posted on 2013-07-15)

In an LCD display some numbers, when viewed upside-down, are images of other numbers. For example, 1995 becomes 5661. The fifth number that can be read upside down is 8, and the 15th is 21, which is 12 when viewed upside-down. What is the millionth number that is meaningful upside-down?

No Solution Yet Submitted by Danish Ahmed Khan

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re: solution (spoiler)

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(In reply to solution (spoiler) by Charlie)

VERY ELEGANT SOLUTION.

Posted by Ady TZIDON on 2013-07-15 13:38:54

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