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An opaque bag contains three red, two blue, and four green
marbles. What is the probability of randomly pulling out a red
marble, replacing it, then randomly drawing another red
marble?

Respuesta :

Answer:

  • 1/9

Step-by-step explanation:

Probability of drawing 1st red marble

  • No. (red) / No. (total)
  • 3 / (3 + 2 + 4)
  • 3/9
  • 1/3 - P(1)

Probability of drawing 2nd red marble

  • It states it is replaced
  • Number of red is same as the beginning and total number is same
  • P(2) = P(1)
  • 1/3 - P(2)

Probability

  • P(1) x P(2)
  • 1/3 x 1/3
  • P = 1/9

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