How many two-element subsets of {2,4,6,8} are there that do not contain the element 4? Choose the most appropriate option:
A) 1 B) 2 C) 3 D) 4 E) 5
Required subsets are = {2,6}, {2,8}, {6,8}= 3   Answer: 3
<result>C</result>
How many two-element subsets of {2,4,6,8} are there that do not contain the element 4?