1
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What does all these countries have in common?

  • Botswana
  • Costa Rica
  • Georgia
  • Honduras
  • Jamaica
  • Japan
  • Latvia
  • Macedonia
  • Nigeria
  • Peru
  • Switzerland
  • Thailand
  • Trinidad and Tobago
  • England
  • Israel
  • Laos
  • Austria
  • Scotland
  • United Kingdom

I have add more countries with same properties,
I think they are the only countries, with the properties.

Sorry there is a mistake, Libya is not among them. I used old data, so I was wrong.

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  • $\begingroup$ They all have an "a"! ... oh wait... $\endgroup$ – boboquack Dec 15 '17 at 6:24
  • $\begingroup$ @boboquack ha.. ha... United Kingdom doesn't have it! $\endgroup$ – Jamal Senjaya Dec 15 '17 at 6:30
  • $\begingroup$ they are all above sea level $\endgroup$ – narasimha Dec 15 '17 at 7:12
  • $\begingroup$ Are those the only countries? Or can more countries be added to the list? I have a feeling it's gonna be too broad in the latter case... $\endgroup$ – Lolgast Dec 15 '17 at 7:20
  • 1
    $\begingroup$ All countries have trees $\endgroup$ – I am the Most Stupid Person Dec 15 '17 at 7:24
4
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Is it:

all of flags are symmetric.
So, no matter you put the flags, there is no upside down.

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  • $\begingroup$ Costa Rica and Trinidad and Tobago don't have this property. $\endgroup$ – Rick van Osta Dec 15 '17 at 7:57
  • $\begingroup$ @RickvanOsta : Their Flags have varians, and the varians is symetric. $\endgroup$ – Jamal Senjaya Dec 15 '17 at 7:58
  • $\begingroup$ Your last edit isn't true, at least not for Trinidad and Tobago and for the UK. All flags can be rotated by 180° and stay the same, though. (But you wouldn't be able to attach them to a flagpole if they were real flags.) $\endgroup$ – M Oehm Dec 15 '17 at 8:23
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    $\begingroup$ @shree.pat18 The flag of Bangladesh is not symmetric. $\endgroup$ – zagad Dec 15 '17 at 10:24
1
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Is it:

white color, because the flags of all the listed countries have white color in it.

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  • $\begingroup$ No, but you are on the right track $\endgroup$ – Jamal Senjaya Dec 15 '17 at 7:25

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