A sock drawer contains 5 socks, each one a different solid color. The colors of the socks are yellow, green, blue, indigo, and violet. If a person reaches into the drawer and pulls out two socks, how many different color combinations are possible in the selected pair of socks? Choose the correct answer:
A) 10 B) 15 C) 21 D) 36 E) 42
Since the order in which we select the socks does not matter, we can use combinations.   We can select 2 socks from 5 socks in 5C2 ways.   5C2 = 10   10nswer : 10
<result>A</result>
A sock drawer contains 5 socks, each one a different solid color. The colors of the socks are yellow, green, blue, indigo, and violet. If a person reaches into the drawer and pulls out two socks, how many different color combinations are possible in the selected pair of socks?