x No Plagiarism!Dnj8RiZ5U2lEKjPNDg0Dposted on PENANA 1,000,000粒沙子是一個丘,653Please respect copyright.PENANAYrsqBPnwcv一個丘減掉一粒沙子還是一個丘 ,653Please respect copyright.PENANAJVgnsFigQk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?216.73.216.176ns216.73.216.176da2