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1.
Is the largest.
Greenland has an area of 2,17 million km².
2.
Has the highest HDI.
Norway has a HDI of 0.953, Iceland has 0.935 and Greenland has 0.839.
3.
Ingólfr Arnarson founded this country's capital.
4.
Has the least public debt.
Greenland and Iceland both have no public debt
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Greenland has $5,437 public debt per capita as to Iceland and Norway, who botz have more than $20,000.
5.
Has the highest GDP (PPP) per capita.
Norway is fourth in the world ranking with more than $74,000 per capita.
6.
Their flags are opposites.
7.
The capital has several different vowels.
Reykjavik - 3, Nuuk and Oslo - 1
8.
It's capital is also known as Godthåb.
This is the Danish name for Nuuk.
9.
Borders the Atlantic Ocean.
Good job you answered the trivial question correctly.
10.
Is known for its extremely high percentage of people being organized in trade unions.
90% of Iceland's jobholders are organized in unions.
11.
Is in the EU.
Greenland was only a member from 1973 to 1986. The other two should have joined in 2004 but changed their mind.
12.
Is not in Europe.
Greenland is on the North American Plate, therefore part of North America. q.e.d.
13.
Electricity is so cheap, that people there often don't turn off the light in rooms they don't use for days.
Electricity isn't that cheap anywhere
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Also, about the electricity, I have heard the same about Iceland.