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प्रश्न
In a lottery of 50 tickets numbered 1 to 50, one ticket is drawn. Find the probability that the
drawn ticket bears a prime number.
उत्तर
Total no. of possible outcomes = 50 {1, 2, 3, …. , 50}
E⟶ event of getting a prime no.
No. of favourable outcomes = 15
{2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47}
Probability, P(E) =`"o.of favorable outcomes"/"Total no.of possible outcomes"`
i.e. P(E) =15/50 =3/10
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