求助: Data analytics 的练习，希望有经验的jms指教

就是bike sharing 的data Assume that each bike has exactly maximum xx rentals per day. Find the maximum number of bicycles nmax that was needed in any one day. Find the 90%-percentile of bicycles n90 that was needed in any one day.
这里要find nmax,不应该是min吗 第二个是用K(N+1)的公式吗 非常感谢