Ella created a board game that instructs players to roll a standard 6-sided number cube and pick a marble out of a bag without looking. On Colin's turn, the bag contains 1 red marble, 1 blue marble, and 1 green marble. If Colin can win the game by either rolling a "6" or choosing the red marble, what is the probability that Colin wins the game?

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Mathematics

19 October, 11:37

Ella created a board game that instructs players to roll a standard 6-sided number cube and pick a marble out of a bag without looking. On Colin's turn, the bag contains 1 red marble, 1 blue marble, and 1 green marble. If Colin can win the game by either rolling a "6" or choosing the red marble, what is the probability that Colin wins the game?

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Mila Baldwin · Answer 1

The probability of rolling a 6 is 1/6.

The probability of pulling the red marble is 1/3.

The probability of one OR the other is (1/6 + 1/3)

= (1/6 + 2/6)

= 3/6 = 1/2 (50%)