Question

A single letter is selected at random from the word "PROBABILITY". The probability that it is a vowel, is
Select one:
03/11
04/11
02/11
o 11/4​

Answer 1

$\displaystyle\huge\red{\underline{\underline{Solution}}}$

The number of alphabets in the word "PROBABILITY" is 11

So the total number of possible outcomes = 11

Let A be the event that the selected letter is VOWEL

So the total number of possible outcomes for the event A is 4

So the required probability = P(A) = $\displaystyle \: \frac{1}{4}$

Answer 2

Answer:

Here the letters O,A,I,I are vowels and the total no of letters in probability is 11.

So the probability is

$\frac{favourable \: outcomes}{total \: outcomes}$

So in this question the probability of favourable outcomes is 4 and total is 11. So the probability is

$\frac{4}{11}$