We learn that a Korah must be within twenty to be noticeable; however, Rebbi Yehuda allows it to be placed above as well. How is it going to be noticed?
The Gemara says that the ‘Rabim’ will pay attention and maintain the Korah properly, as opposed to a ‘Yachid’ who might neglect it. Why are the Rabim superior to an individual, since they too are merely a multitude of individuals?