Problem Statement: EE Board October 1990From a bag containing 4 black balls and 5 white balls, two balls are drawn one at a time. Find the probability that both balls are white. Assume that the first ball is returned before the second ball is drawn.
The probability that both balls are white is 25/81.Solution:
Latest Problem Solving in Venn Diagram, Permutation, Combination and Probability
More Questions in: Venn Diagram, Permutation, Combination and Probability