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ki77a [65]
3 years ago
10

Levi buys a bag of cookies that contains 6 chocolate chip cookies, 9 peanut butter cookies, 8 sugar cookies and 8 oatmeal cookie

s. What is the probability that Levi reaches in the bag and randomly selects 2 peanut butter cookies from the bag
Mathematics
1 answer:
Nastasia [14]3 years ago
5 0

Answer:

12/155

Step-by-step explanation:

<u>Total number of cookies:</u>

  • 6+9+8+8= 31

<u>Probability of getting a peanut butter cookie at first attempt is 9 out of 31:</u>

  • 9/31

<u>Probability of getting a peanut butter cookie at second attempt is 8 out of 30 as one already taken and the total number has changed as well:</u>

  • 8/30= 4/15

<u>Probability of getting 2 peanut butter cookies is the product of each probability we got above:</u>

  • 9/31×4/15= 12/155
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