Billiards: 9-ball (although, billiards may not be an actual sport)
Softball also uses a yellow ball.
Squash or Racket Ball
The regulation sport that uses the largest ball is basketball.
Ping-pong has the smallest ball.
The sport of bowling.
Nine ball (pool)
Yellow.
Beach
Softball also uses a yellow ball.
There is a "double-yellow dot" ball currently used in the sport of squash.
Squash
The national flag of Cameroon is a horizontal green stripe on the left, followed by a red stripe and then a yellow stripe. In the center of the red stripe is a yellow star.
1-yellow, 2-blue, 3-red, 4-purple, 5-orange, 6-green, 7-maroon, 8-black, 9-yellow stripe, 10-blue stripe, 11-red stripe, 12-purple stripe, 13-orange stripe, 14-green stripe and the 15-maroon stripe. ADD: Technically this is incorrect. Eight ball pool simply describes a game where you shoot your balls in first, then the 8 ball last to win. So, each player has 7 balls to pot, and then the 8 ball. These 7 balls can be any colors, as long as the two groups are identifiable from each other. Yellow and red are used extensively, and there are endless variations for the 2 groups. Additionally, there is absolutely no requirement for "stripes" and "solids" , or numbers on the balls, so really this answer is completely misguided.
It depends where you take it. My school it goes White Yellow Stripe Yellow Orange Stripe Orange Green Stripe Green Blue Stripe Blue Red Stripe Red Black Stripe White Stripe Black
In WTF the belt system is as follows: White, white with yellow stripe, yellow, yellow with green stripe, green, green with blue stripe, blue, blue with red stripe, red, red with black stripe, black. There are 10 levels of black belt.
A brown spider with a yellow stripe on its head is a wolf spider. The wolf spider may sometimes have an orange stripe on their head also.
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