0.9....(循環) = 1 [難題]

Pentagon

如何解釋:www3.tvboxnow.com( i1 m* A( s& {: R# k

* h9 I0 w/ K2 y9 l- _/ ~公仔箱論壇0.9....(循環) = 1

Pentagon

The answer is:8 M/ }4 C# W9 K  g

- n0 i$ W% c) L7 bIf 1/9=0.1...(循環)www3.tvboxnow.com0 m& k) C, ~; j* Z. _, N$ C
and then 2/9=0.2....(循環): Y5 L" Y1 o' |4 B6 c
and then 3/9=0.3....(循環)tvb now,tvbnow,bttvb0 S9 C" O- g+ E+ x
and then 4/9=0.4....(循環)
5 K0 v/ G' A, wtvb now,tvbnow,bttvb.......
, D5 v% O5 e# n  [www3.tvboxnow.comand then 8/9=0.8....(循環)
, |7 u5 L, s. A  ~5 R! x5 @
  |+ `! |" Y' S8 _* V# gSo, 9/9=0.9....(循環) =1