you don't earn money.You earn points
The blue ball in the game of pool is the #2.
Win games or tournaments or buy cash for real money
The ball that you intend to play.
The 8 ball
This is not possible in any common game of pool. Only Straight Pool allows the balls to be placed in nearly any position to accomplish this - no other common pool game allows placing the balls in that order. The middle of the rack is in between the second and third row of balls. It appears what is being asked is what ball will be in the 5th ball position, with one ball to left and one ball to the right if all the balls are arranged lowest to highest. This would be the 5 ball. However, Straight Pool requires that the 1 ball and the 5 ball be placed in the corners. Therefore, no pool game allows the balls to be placed in the way required - so, any ball may be in the "middle" position depending upon the game of pool being played.
water polo
eight ball
8
The fifth ball in a pool ball triangle will dpend upon the game being played. In Straight Pool, it can be any of 13 different balls. Only the 1 and the 5 cannot be located there. In 8 Ball, the 5th ball must be the 8 ball.
you have to break it and make the 8 ball go in a pocket (at the same time)
Pool