Estimating Jackpot Frequency on the Slots
Slot machines have been with us ever since Charles Fey invented the Liberty Bell slot in San Francisco in the 1890s. Those early slots were mechanical, and if you knew the number of symbols per reel, you could calculate the odds.
If a game had three reels with 10 symbols on each reel, and one top jackpot symbol per reel, then the odds of hitting the top jackpot were 1 in 10 x 10 z 10, or one in 1,000.
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