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प्रश्न
Determine the probability p, for the following events.
At least one head appears in two tosses of a fair coin.
योग
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उत्तर
When a fair coin is tossed twice
Then the sample space
S = {HH, HT, TH, TT}
∴ Probability of getting atleast one head (HH, HT, TH) = `3/4`
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