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Two urns containing white and red balls. In probability and statistics, an urn problem is an idealized mental exercise in which some objects of real interest (such as atoms, people, cars, etc.) are represented as colored balls in an urn or other container.
Once the ball bounces into a square, the player who occupies that square must hit the ball into another square with their hands, and so on, until someone gets out. Each time a player gets out, that player leaves the court and enters the back of the line and all remaining players advance to the higher numbered square (if applicable).
Deedee, a mousy-looking student, is unable to get a high-bouncing green ball or a decent red ball at recess; instead, she ends up with the one yellow ball, which does not bounce and never goes the direction it is kicked. Even when running as fast as she can, Deedee is still unable to reach the playground in time, as her class is on the 30th floor.
Most injuries on public playground equipment were associated with climbing equipment (53%), swings (19%), and slides (17%). Falls to the surface was a contributing factor in 79% of all injuries. On home equipment, 81% were associated with falls. In 1995, playground-related injuries among children ages 14 and younger cost an estimated $1.2 ...
Four-ball billiards. Four-ball billiards or four-ball carom (often abbreviated to simply four-ball, and sometimes spelled 4-ball or fourball) is a carom billiards game, played on a pocketless table with four billiard balls, usually two red and two white, one of the latter with a spot to distinguish it (in some sets, one of the white balls is yellow instead of spotted).
Volumes of balls in dimensions 0 through 25; unit ball in red. In geometry, a ball is a region in a space comprising all points within a fixed distance, called the radius, from a given point; that is, it is the region enclosed by a sphere or hypersphere. An n-ball is a ball in an n-dimensional Euclidean space.
Connect Four (also known as Connect 4, Four Up, Plot Four, Find Four, Captain's Mistress, Four in a Row, Drop Four, and Gravitrips in the Soviet Union) is a game in which the players choose a color and then take turns dropping colored tokens into a six-row, seven-column vertically suspended grid. The pieces fall straight down, occupying the ...
Cool Math Games (branded as Coolmath Games) [a] is an online web portal that hosts HTML and Flash web browser games targeted at children and young adults. Cool Math Games is operated by Coolmath LLC and first went online in 1997 with the slogan: "Where logic & thinking meets fun & games.".