519,287 views
45 votes
45 votes
Wyatt buys a bag of cookies that contains 4 chocolate chip cookies, 7 peanut butter cookies, 7 sugar cookies and 7 oatmealcookies. What is the probability that Wyatt reaches in the bag and randomly selects an oatmeal cookie from the bag, eats it, thenreaches back in the bag and randomly selects a peanut butter cookie?

User SenseException
by
2.3k points

1 Answer

18 votes
18 votes

Solution

Chocolate chips cookies = 4

Peanut butter cookies = 7

Sugar cookies = 7

Oatmeal cookies = 7

Total cookies = 4 + 7 + 7 + 7 = 25

We want to find probability without replacement


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Therefore, the answer is


p(OatmeatAndPeanutButtter)=(49)/(600)

User Hraban
by
3.0k points