None of them do.
Because London is not a country or continent. London is a city.
No country uses both Euros and Francs. Most countries use one and only one currency.
London is a city in the country of England, they use the pound nationally, and the euro internationally.
Yes.
Yes, the Euro is a common currency throughout most of Europe, any country that uses the Euro will accept Euros from any other country that uses the Euro. There is no exchange rate, all Euros are the same value.
there is no such country as "Slovenkia" - are you trying to refer to Slovenia or Slovakia?
It does not matter which country the Euros originally come from, they can be used in any other country that uses the Euro. That is one of the reasons for having the common currency in the countries that use the Euro. So Euros from Italy can indeed be used in Dublin.
Many Europian countries use them now after the UN combined currencies
Norway is in Europe, but they don't use Euros. The Norwegian currency is Norwegian Kroner.
yes irish people do use euros
No. (Exception. Tesco Accept Business Cheques only with prior arrangement with store management).
Bosnia does not use Euros. They use Bosnia-Herzegovina Convertible Mark.
Yes. Euros from any country can be used in any other country that uses the euro.