Carmelo and LeBron participate in a eight-person footrace on the basketball court during All-Star Weekend. If all eight contestants finish (including Charles Barkley) and there are no ties, how many different arrangements of finishes are there in which Carmelo defeats LeBron?	Pick one
A) 20160
B) 2520
C) 720
D) 120
E) 42
8! = 40320   40320/2= 
<gadget id="calculator">40320/2</gadget>
<output>20_160</output>
20160 half the time carmelo is in front, vice versa   20160nswer:   (20160) 20160
<result>A</result>
Carmelo and LeBron participate in a eight-person footrace on the basketball court during All-Star Weekend. If all eight contestants finish (including Charles Barkley) and there are no ties, how many different arrangements of finishes are there in which Carmelo defeats LeBron?