Q. 55.0( 1 Vote )

A bag contains 1.

Answer :

Given: A bag containing 10 white and 15 black balls .Each trial is independent of the other trial.


To find: the probability that the first ball is drawn is white and the second ball drawn is black.


Let , success in the first draw be getting a white ball.


Now , the Probability of success in the first trial is


P1(success) =


Let success in the second draw be getting a black ball.


Probability of success in the second trial without replacement of the first draw is given by


P2(success) =


Hence , the probability that the first ball is drawn is white and the second ball drawn is black,with each trial being independent is given by


P1 P2 = =


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