While the percentages may not hold in a particular industry, the rule suggests that a small fraction of customers provide most of a firm's revenues.

The correct answer is 80/20.

Explanation:

The Pareto Principle was described by economist and sociologist Vilfredo Pareto, which specifies an unequal relationship between inputs and outputs. The principle states that 20% of what goes into or is invested is responsible for 80% of the results obtained. In other words, 80% of the consequences derive from 20% of the causes; This is also known as the "Pareto rule" or the "80/20 rule."

The principle does not stipulate that all situations are going to show exactly this relationship, it refers to a typical distribution. In general, the principle can be interpreted as a minority of causes deriving from most of the results.

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answer is i don't know