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Behind the Scenes

Lottery Draw Machines: Gravity Pick vs. Air Mix

The two main kinds of ball machines, how they mix and why both are built to be random.

Apollo AI Blog Team · · 6 min read

Lotteries that draw physical balls generally use one of two machine types.

Gravity pick machines

A clear drum spins with paddles or fins that tumble the balls. When the drum stops or a gate opens, a ball drops into a collection tube.

Air mix machines

Air blown from below keeps the balls bouncing in a chamber. A ball is pushed up through a tube when the draw begins.

Built for randomness

Both designs aim to mix balls thoroughly so every ball has an equal chance. Lotteries use measured, weighed ball sets and independent observers, and many rotate equipment regularly.

Random number generators

Some lotteries use certified computer-based random number generators instead of physical balls, with strict testing and security.

Whatever the method, past draws don't influence future ones. Apollo AI's Trend Viewer shows history, not a forecast.

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