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29. Each day, two out of the three teams in a class are randomly
selected to participate in a MATHCOUNTS trial competition.
What is the probability that Team A is selected on at least two
of the next three days? Express your answer as a common
fraction.

Respuesta :

Answer:

20/27

Step-by-step explanation:

P(Team A being chosen for 1 day) = 2/3

P(Team A being chosen for 2 days) = 2/3*2/3 = 4/9

P(Team A being chosen for 3 days) = 4/9*2/3 = 8/27

8/27 + 4/9 = 20/27

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