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一、选择题1.在100人组成的旅游团队中,有75人带胃药,80人带感冒药,那么既带胃药又带感冒药的人数最大值M和最小值m为( )。
First, multiple-choice questions 1. In a tourism team consisting of 100 people, 75 people have gastric medicines and 80 people have cold medicines. Then the maximum number M and the minimum value m of both the stomach medicine and the cold medicine are ().