Question

There are 5 red and 3 black balls in a bag, prabablity of drawing a black is.........?

Answer 1

n(R)=5
n(S)=8
n(B)=3
therefore,
P(B)= n(B)/n(S)
=3/8
therefore ,P(B) = 3/8

hope it helps you

Answer 2

This is the answer-

Sample space = (5red balls,3black balls)

n(S)=8

n(A)=3

p(A) = n (A) / n (S)

       = 3 / 8

P(A) = 3/8

It will help you.