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Geometry A Common Core Curriculum
PROBLEM SOLVING A drawer contains 12 white socks and 8 black socks. You randomly choose 1 sock and do not replace it. Then you randomly choose another sock. Find the probability that both events $A$ and $B$ will occur. (See Example $4 . )$
Event $A :$ The first sock is white.
Event $B :$ The second sock is white.