0.9....(循環) = 1 [難題]

Pentagon

如何解釋:公仔箱論壇. z$ X8 ?* {4 E1 h

" S1 ^1 R' m; _5 u8 ztvb now,tvbnow,bttvb0.9....(循環) = 1

Pentagon

The answer is:
1 a8 v- J6 o. U! t. }# A
$ C$ G! o- B, Z; h% ?( o( ttvb now,tvbnow,bttvbIf 1/9=0.1...(循環)
& `7 ~/ _* Z, B7 D5.39.217.77:8898and then 2/9=0.2....(循環)
! [5 Y; m) ^4 S# `% @+ P" m: fand then 3/9=0.3....(循環)
. l5 ~. E# W2 ]! ~. e# ztvb now,tvbnow,bttvband then 4/9=0.4....(循環)
" t' {/ ], w! u2 W  e.......
  \% J3 d3 {4 \+ v% [, R9 X) Wtvb now,tvbnow,bttvband then 8/9=0.8....(循環)5.39.217.77:8898# @! F2 s! f2 }: g9 ?" c7 A2 n& a" g

( |( q% {# l9 a! Itvb now,tvbnow,bttvbSo, 9/9=0.9....(循環) =1