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4. A real estate agent has 8 master keys to open several new homes. Only 1 master key will open any given house. If 40%

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4. A real estate agent has 8 master keys to open several new homes. Only 1 master key will open any given house. If 40% of these homes are usually left unlocked, what is the probability that the real estate agent can get into a specific home if the agent selects 3 master keys at random before leaving the office

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