Question

. A bag contains 7 Red, 5 white and 6 black balls. A ball is drawn from the bag at random. Find the

probability that the ball drawn is not black?​

Answer 1

Answer:

probability that the ball drawn is not black =7+5/18

=12/18=2/3

Answer 2

Step-by-step explanation:

Ways in which one ball can be drawn =

18C

¹

Now,ways in which only red and white is drawn ⇒

7C+ 5C

¹ ¹

So probability = 7+5/18

= 18/12

= 3/2