Question

A single letter is selected at random from the word 'PROBABILITY'. What is the probability that it is a vowel ?

Answer 1

Let V be the event that a vowel is chosen

$\therefore P\left(V\right)=\frac{4}{11}$

$\because$ There are 4 vowels among 2 letters in the word probability

$\therefore P\left(V\right)=\frac{4}{11}$