Question 1200401
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The response from the other tutor shows one basic way to calculate this probability -- by looking at the probability that the first cookie is a sugar cookie and then the next one is also.<br>
You should know the other basic method for computing this kind of probability, as follows.<br>
The number of ways of choosing 2 of the 24 cookies is C(24,2) = "24 choose 2"; the number of ways of choosing 2 sugar cookies is C(4,2) = "4 choose 2".  The probability of getting 2 sugar cookies is then<br>
{{{C(4,2)/C(24,2)=6/276=1/46}}}<br>