About 20 balls or more are made for a World Cup game.
There are no grey balls in a standard game of snooker.
There are about 300 million tennis balls manufactured in the world each year. Tennis balls are not usually recycled and the rubber they are made from doesn't break down easily.
There are six balls in an over.
Depending upon the game, there are from 7 to 21 colored balls.
There is no game of pool practice, so there are no red balls. The 3 and 11 balls are red in the game of pool however.
There are seven striped balls in billiards.
3 strikes. 4 balls.
10
240
The number of balls depends upon the game. All balls use a cue ball plus 7, 9, 15, or 21 numbered balls.
15 red snooker balls.
Approx 3.8 billion men in the world so that makes 7.6 billion balls