there are 14 players in a chess group , and each player plays each of the others once . given that each game is played by two players , how many total games will be played ?
"10 players are there . two players play one game with one another . so 14 c 2 = 14 * 13 / 2 = 91 so option a is correct"
divide(multiply(14, subtract(14, const_1)), const_2)