A single letter is selected at random from the word 'PROBABILITY'. What is the probability that it is a vowel ?
Let V be the event that a vowel is chosen
∴P(V)=411
∵ There are 4 vowels among 2 letters in the word probability
A single letter is selected at random from the word "PROBABILITY”. The probability that the selected letter is a vowel is
[MNR 1986; UPSEAT 2000]