Question

3.A bag contains 5 black, 7 red and 3 white balls. A red ball is drawn from the bag at random. The probability that the drawn ball is not red is : *​

Answer 1

Answer:

total ball =7+5+3=15

so,

black ball = 5/15

=1/3

red ball =7/15

white ball =3/15

=1/5

Answer 2

0.533

Step-by-step explanation:

Sample space = { 5 + 7 + 3 }

Sample space = { 15 } = n (s)

Let A be the event of not getting a red ball.

A = { 5+3 }

A = {8}

$p(a) = \frac{n(a)}{n(s)}$

$p(a) = \frac{8}{15}$

p(a) = 0.533