Question

A bag contains 4 balls, 2 black, 2 white in it .We have to drawn 3rd ball as black. Given that if ball is white it is not replaced into bag otherwise it is replaced along with another ball of the same color. The probability of 3rd ball being black is

Answer 1

Answer:

Step-by-step explanation:

There are 4 possible path go get Black ball in 3rd draw :

BBB , BWB , WBB & WWB

Probablity is 12×12×12 + 12×12×23 + 12×23×23 + 12×13×1 = 4972

Brainliest please