Brain Teasers Trivia Mentalrobics
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Commuter Science

These brain teasers rely on your ability to recognize groups of common attributes. For each of these puzzles you'll need to figure out why the words or letters are grouped as they are. Sometimes you will be asked to pick the odd-one-out or to place a new word into the correct group.


Fun:*** (2.75)
Difficulty:**** (3.28)
Submitted By:Smithy


What is the link between the following countries?


Czechoslovakia also shared this link, although neither the Czech Republic nor Slovakia do individually.

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Posted by eighsse on Aug 25, 2013

So hard, but really interesting! Good one!

Posted by nicats on Aug 26, 2013

Cool this never crossed my mind.

Posted by debc1 on Aug 26, 2013

you stink

Posted by Smithy on Aug 26, 2013

Thank you all - especially deb!

Posted by BeanSC on Aug 29, 2013

Good one!

Posted by Mad-Ade on Aug 30, 2013

Damn you Mr Smithy and your entertainingly difficult teasers, well done.

Posted by Smithy on Sep 18, 2013

Thank you both! I'm glad the link isn't too obscure to be of interest.

Posted by catmom on Sep 27, 2013

Not in a million years would I have come up with the answer.

Posted by HABS2933 on Sep 27, 2013

Not a chance I would have ever come up with that one!
Interesting factoid though, I try to learn at least one piece of "useless knowledge" every day.. Thanks this will work!

Posted by elentir on Sep 27, 2013

Fun teaser!

Interesting facts, Francium is the only element that is named after the country who's TLD that it shares it symbol. Indium matches India's TLD, but it was technically named after its indigo blue spectral line instead of the country. Europium comes close in that it shares its symbol with the European Union (although they technically aren't a countries).

Posted by cutebug on Sep 27, 2013

I was clueless.

Posted by bestgirl on Sep 27, 2013

Too hard for me!

Posted by kitty-cat on Sep 27, 2013

I couldn't figure this one out while sitting in Chemistry class with a periodic table on the wall opposite me. Maybe next time.

Posted by tripleteam5 on Sep 27, 2013

several days back I commented that that puzzle was the worst I have seen for aecane information and no help clue I had EVER seen , And I was right....Until today They should have "thumbs" instead of emotiocons for rating this

Posted by Smithy on Sep 28, 2013

I don't think it's "arcane", just obscure. Thanks to those that found it interesting, especially elentir for the extra info!

Posted by zigthepig on Feb 24, 2015

Very cool and interesting. *favourites*

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