Question

If we select a letter from the word 'PROBABILITY' at random, what is the probability that it is a vowel?

• A. $\frac{3}{11}$
• B. $\frac{2}{11}$
• C. $\frac{4}{11}$
• D. $\frac{5}{11}$

Answer 1

The correct option is C $\frac{4}{11}$

In the word - 'PROBABILITY',
Total number of letters =11

Number of vowels in the given word (o, a, i, i) = 4

Probability is the ratio of the number of favourable outcomes and the total number of outcomes.
In this case, favourable outcomes are 4 and total outcomes are 11.

Thus, the required probability,
$P=\frac{4}{11}$