A single letter is selected at random from the word ‘PROBABILITY’. The probability that it is a vowel is
A. 1/3
B. 4/11
C. 2/11
D. 3/11
Total no. of alphabet in PROBABILITY = 11
& no. of vowels in it = 4, viz., (O, A, I, I)
Probability = no. of favorable outcomes/ total no. of outcomes
Now, P (letter is vowel) = 4 / 11
Thus, option B is the correct answer.