Question 2 - Upper Level: Mathematics Achievement Practice Test for the ISEE

Rod has a drawer full of socks. There are 2 pairs of black socks and 4 pairs of white socks, but the socks are not arranged by pair. If Rod randomly pulls one sock and puts it on, and randomly pulls another and does the same, what is the chance that the socks Rod wears will be a pair of all-black socks?

\[\frac{1}{3}\]
\[\frac{1}{9}\]
\[\frac{1}{11}\]
\[\frac{1}{2}\]

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