Question
A single letter is selected at random from the word ‘Probability’. Find the probability that it is a vowel.
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Answer
Possible outcomes= s={'p','r','o','b','a','b','i','l','i','t,''y'}
n(s)=11
Event of selection of vowels =E={'o','a','i','i'}
n(E)=4
Probability of selection of a vowel =
$p(s)=\frac{n(E)}{n(s)}=\frac{4}{11}$
n(s)=11
Event of selection of vowels =E={'o','a','i','i'}
n(E)=4
Probability of selection of a vowel =
$p(s)=\frac{n(E)}{n(s)}=\frac{4}{11}$
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