there are 18 teams in the hockey league , and each team faces all the other teams 10 times each . how many games are played in the season ?
"the number of ways to choose two teams is 18 c 2 = 18 * 17 / 2 = 153 the total number of games in the season is 10 * 153 = 1530 . the answer is b ."
divide(multiply(multiply(18, subtract(18, const_1)), 10), const_2)