Question

In a jar of 12 cookies a total of 3 cookies are chocolate chip cookies. Il a customer buys 2 cookies selected at random from the jar, what is the probability that neither cookies will be a
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Answer 1

Answer:

6/11 or 54.55%

Explanation:

P(CCC) = 3/12

P(not CCC) = 9/12

When 2 cookies are picked at random, probability for 1st cookie to not be a chocolate chip cookie will be 9/12.

Now there are 11 cookies of which 8 are not chocolate chip cookies, so the probability of 2nd cookie will be 8/11.

P(2 not CCC) = 9/12 X 8/11 = 6/11