Problem: How many centimetres make up a hand, the measurement used on horses?
Answer: 10

Problem: Who played The Joker in the 1989 film Batman?
Answer: jack nicholson

Problem: The Shatt-al-Arab River is formed by the confluence of which two rivers, at Al-Qurnah, Iraq near Basra?
Answer: tigris and euphrates

Problem: Due to the number of its population which country is known as the "Giant of Africa"?
Answer:
nigeria