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प्रश्न
Two coins are tossed simultaneously. What is the probability of getting at least one head?
योग
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उत्तर
Given: Two coins are tossed simultaneously.
To find: Probability of getting at least one head.
When two coins are tossed, the outcome will be
TT, HT, TH, HH.
Hence, the total number of outcomes is 4.
At least one head means 1H or 2H.
Hence, the total number of favourable outcomes, i.e. at least one head, is 3
`"Probability" = "Nummber of favourable event"/"Total number of event"`
Hence, the probability of getting at least one head = `3/4`
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