In which province is the Helmcken Falls located?

Which river feeds the highest waterfall in Africa? What is the height of the Huangguoshu Waterfall in China? Which waterfall is also known as 'Kerepakupai Merú'? What is the name of the highest waterfall in Norway? Which waterfall is located in the Krka National Park? Which of the following waterfalls is NOT located in South America? In which mountain range is the Angel Falls located? In which country is the Kaieteur Falls located?