At least one tail
Probability
Level
2
If a coin is tossed 10 times what is the probability of getting at least one tail ?
The answer is 0.999023438.
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1 solution
Probability of getting at least 1 tail is = 1 - Probability of getting no tails = 1 - Probability of getting all heads.
Total number of outcomes when a coin is tossed 10 times is 2^10 = 1024.
Probability of getting all heads = 1/1024. Therefore Probability of getting at least 1 tail i = 1023/1024 = 0.999023438