Slot machine A slot machine has three wheels thatspin independently. Each has 10 equally likely symbols:4 bars, 3 lemons, 2 cherries, and a bell. If you play,what is the probability thata) you get 3 lemons?b) you get no fruit symbols?c) you get 3 bells (the jackpot)?d) you get no bells?e) you get at least one bar (an automatic loser)?

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Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.