Each time you click the question button, this exerciser will produce a new question. Give yourself some time to think about the answer. Then click the answer button to see the answer we were expecting.

Our answer and yours may have nothing in common while both being correct. For example a question like "What is special about Polaris?" can be validly answered either "Polaris is the bright star closest to the North Celestial Pole." or "Polaris is the nearest Cepheid variable star."