Question

a letter of english alphabet is chosen at random. determine the probablity that the letter.Chosen is consonant

Answer 1

Let S be the sample space.
N(s)=26
E=event that letter chosen is consonant.
N(E)=26-5=21
So P(E)=21/26.

Answer 2

n(s)=26
A-a consonant
n(a)= 21

p(a)=n(a)÷n(s)
=21/26