According to List of Countries by Literacy Rate, the country of Norway has a literacy rate of 100%.
After reading this I was struck by a strange thought. Perhaps Norway doesn’t really have a 100% literacy rate AND they are really bad at math.
I have no proof. Just a vague suspicion.
They have a king who is King Harald V of Norway. Think about it. The King of the place doesn’t even know how to spell his own name!