An experiment consists of a letter chosen at random from the word ‘ASSASSINATION’ which consists 13 letters, (6 vowels and 7 consonants).
∴ Sample points are 13.
(i) Let E be the event that chosen letter is a vowel
E = {A, A, A, I, I, O}
∴ n(E) = 6 ⇒ P (E) =

n(E)

n(S)

=

6

13

(ii) Let F be the event that chosen letter is a consonant
∴ F = {S, S, S, S, N, N, T} ⇒ P (F) =

n(F)

n(S)

=

7

13