How many different ways can 2 students be seated in a row of 5 desks, so that there is always at least one empty desk between the students?  Choose the correct choice from the following:  A) 2  B) 3  C) 4  D) 6  E) 12
6 ways to seat the students:   with two empty seats between   1 empty w/ one student on the left most   1 empty....right most   two students can be interchanged   6x2=12   12
<result>E</result>
How many different ways can 2 students be seated in a row of 5 desks, so that there is always at least one empty desk between the students?