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प्रश्न
A coin is tossed once. Find the probability of not getting a tail.
उत्तर
Sample space = {H, T}
n(s) = 2
Not getting a tail means getting a heads.
Event of getting a heads = {H}
n(A) = 1
Therefore, the probability of tail = `(n(A))/(n(s)) = 1/2`
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