How many three-element subsets of {5,6,7,8,9} are there that do not contain the pair of elements 6 and 9?  Choose the correct choice from the following answers:	A) 1	B) 2	C) 3	D) 4	E) 5
Required subsets are = {5,6,7},{5,7,8},{5,8,9},{6,7,8}, {7,8,9}= 5   Answer: 5
<result>E</result>
How many three-element subsets of {5,6,7,8,9} are there that do not contain the pair of elements 6 and 9?