Q. Which of the following European Union member countries use the euro as their official currency?
  1. Denmark
  2. Spain
  3. Hungary
  4. Austria
  5. Bulgaria
Select the correct answer using the codes given below:

Answer: Only 2 & 4
Notes: Spain and Austria use the euro as their official currency. Denmark, Hungary, and Bulgaria are EU member states but do not use the euro; they have retained their own national currencies. Out of the options listed, only Spain and Austria are part of the Eurozone, which currently consists of 20 EU countries using the euro.