摘要
When am I ever going to use this?TRACK AND FIELDThe 100-meter dash features 20 runners competing in a preliminary round of 4 heats.The winner of each heat advances to the final race.Before the race,each runner chooses a number from jar 1 to determine the heat in which he runs and a number from jar 2 to determine one of five lanes he occupies.Omar is thefirst runner to choose from the jars.
出处
《中学生数学》
2023年第14期F0003-F0003,共1页
