甲组:1,3,5,7,9,11,13,15,17,19乙组:2,4,6,8,10,12,14,16,18,20.每次分别从甲乙两组
问题描述:
甲组:1,3,5,7,9,11,13,15,17,19乙组:2,4,6,8,10,12,14,16,18,20.每次分别从甲乙两组
答
问题好像不完整
甲组:1,3,5,7,9,11,13,15,17,19乙组:2,4,6,8,10,12,14,16,18,20.每次分别从甲乙两组
问题好像不完整