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Three Coins Are Tossed Together. Write All the Possible Outcomes. Now, Find the Probability of Getting: at Least One Tail - ICSE Class 10 - Mathematics

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Question

Three coins are tossed together. Write all the possible outcomes. Now, find the probability of getting: 

at least one tail 

Solution

When three coins are tossed, possible outcomes are: 

HHH,HHT,HTH,HTT,THH,THT,TTH,TTT  

Total possible outcomes=8  

Favorable outcomes for at least one tails = HHT,THH,HTH,HTT,THT,TTH,TTT 

Number of favorable outcomes=7 

P(at least one tail)=`7/8`

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Solution Three Coins Are Tossed Together. Write All the Possible Outcomes. Now, Find the Probability of Getting: at Least One Tail Concept: Probability - A Theoretical Approach.
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