Answer to Question #297520 in Statistics and Probability for Bell

Question

Sally has 11 pairs of socks in her drawer. Each pair is a different color and design, but they are not together as pairs; they are just in her drawer scattered about.  With her left hand, Sally reaches in and picks one sock.

   a. While holding that one sock in her left hand, Sally reaches into the drawer and picks another

        sock. What is the probability of her getting a sock that will match the sock in her left hand?

Answer 1

Only one sock of the same color left out of 21.

$P=\frac{1}{21}.$