Answer :

We know that,


Probability of occurrence of an event


Let T be tails and H be heads


Total possible outcomes = TTT, TTH, THT, HTT, THH, HTH, HHT, HHH


Desired outcomes are exactly one tail. So, desired outputs are THH, HTH, HHT


Total no.of outcomes are 8 and desired outcomes are 3


Therefore, the probability of getting exactly one tail


Conclusion: Probability of getting exactly one tail is


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