Three fair coins are tossed. We wish to find the probability of the event A: {Observe at least…

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Three fair coins are tossed. We wish to find the probability of the event A: {Observe at least one head.} a. Express A as the union of three mutually exclusive events. Using the expression you wrote, find the probability of A.
b. Express A as the complement of an event. Using the expression you wrote, find the probability of A.
 

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