A ball is removed at random and replaced; a second ball is then removed.
What is the probability that the balls removed were the same colour?
(Answer is in its simplest form.)
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Home » Mathematics » A bag contains 10 balls: 4 white and 6 black. A ball is removed at random and replaced; a second ball is then removed. What is the probability that the balls removed were the same colour? (Answer is in its simplest form.)