Mathematics, 15.11.2019 16:31 2936131

Abag contains 4 blue coins and 8 red coins. a coin is removed at random and replaced by three of the other color.

part 2 out of 3
if the first coin removed is blue, what is the probability of drawing a red coin after three red coins are put in the bag to replace the blue one?

Answers: 3

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Abag contains 4 blue coins and 8 red coins. a coin is removed at random and replaced by three of the...