0.9....(循環) = 1 [難題]

Pentagon

如何解釋:9 O( Q6 I) @* Q9 v2 ~& r( z$ w

9 u' F# }& a0 H0 U  |( @; {tvb now,tvbnow,bttvb0.9....(循環) = 1

Pentagon

The answer is:; |  N. `3 O1 C# T1 T
" E' k' X% p. h
If 1/9=0.1...(循環)
; d8 U" b9 W9 b3 E% iand then 2/9=0.2....(循環)
( e0 U+ ~( L8 D公仔箱論壇and then 3/9=0.3....(循環)公仔箱論壇" _4 W& t( J, J( J2 K' D! Q
and then 4/9=0.4....(循環)5.39.217.77:8898% ]9 F0 [% ~% s  X5 Z: M# ]- F  W
.......5.39.217.77:88982 t2 f; _; t: `9 o, y% |( b
and then 8/9=0.8....(循環)
- _5 l9 I) ~# ytvb now,tvbnow,bttvb5.39.217.77:8898' [: b1 i2 O, s. @1 Q
So, 9/9=0.9....(循環) =1