Contact us
Choose a category below so we can get back to you as quickly as possible.
0.9+0.99+0.999+…+0.(100個9) =1+1+1+.+1-0.1-0.01-.-0.(99個0)1 =100-0.111(共100個1) =99.888(共99個8)9
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.