If each participant of a chess tournament plays exactly one game with each of the remaining participants, then 120 games will be played during the tournament. Find the number of participants.  Choose the most appropriate option: A) 15 B) 16 C) 17 D) 18 E) 19
Let P be the number of participants.   PC2 = 120   (P)(P-1) = 240 = 16*15   P = 16   The answer is 16.
<result>B</result>
If each participant of a chess tournament plays exactly one game with each of the remaining participants, then 120 games will be played during the tournament. Find the number of participants.