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प्रश्न
Rahim tosses two different coins simultaneously. Find the probability of getting at least one tail.
उत्तर
Rahim tosses two coins simultaneously. The sample space of the experiment is {HH, HT, TH, TT}.
Total number of outcomes = 4
Outcomes in favour of getting at least one tail on tossing the two coins = {HT, TH, TT}
Number of outcomes in favour of getting at least one tail = 3
∴ Probability of getting at least one tail on tossing the two coins `="Number of outcomes in favour"/"Total number of outcomes"=3/4`
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