x No Plagiarism!pbEGJHOJfF210ovPGZR5posted on PENANA 1,000,000粒沙子是一個丘,613Please respect copyright.PENANA2XwtqCYLot一個丘減掉一粒沙子還是一個丘 ,613Please respect copyright.PENANAA1TPvw6Lb1假如一直重複這清況的話(每次都減掉一粒沙子),到了最後會是一個丘等於一粒沙子嗎?3.141.44.178ns3.141.44.178da2