Question

A bag contains 4 white and 5 black balls . Two balls are drawn at random .Find the probability if 1 ball is white and other 1 is black.​

Answer 1

Answer:

see here

probability=favorable outcomes /total outcomes

so total outcomes=no.of white balls +black balls

                              =5+4=9

now at random if white ball is picked up=1/9

also black ball=1/9

Step-by-step explanation: