Jeopardy for the classroom

Gambling

1. What form of gambling, very popular in Japan, involves "guiding" small silver balls into slots?
2. What city in the US, located in the state of Nevada, is famous for its large number of casinos?
3. In what card game, usually played with 5 cards, do players place bets with chips based on the strength of their cards?
4. What tiny country in Europe, completely surrounded by France, is known for its elegant casinos and large number of wealthy residents?
5. Playing cards used for gambling are usually divided into 4 groups - hearts, clubs, spades, and diamonds. What are these groups called in English?