The answer is:
8 d5 D( y5 P7 X: T- O) H" F( S m" q d% x6 U# C. ~$ h% d$ ]" [
If 1/9=0.1...(循環), t8 V& l7 y. T+ O7 B' W
and then 2/9=0.2....(循環)3 _4 N+ z' D) [+ h0 y
and then 3/9=0.3....(循環)
3 j* Z7 L! ^+ X1 G$ {7 ~8 t1 ^and then 4/9=0.4....(循環)tvb now,tvbnow,bttvb z$ X4 J( h' [& v
.......
8 x7 D8 e6 v+ [0 N$ pand then 8/9=0.8....(循環)# \5 J% o3 K* T
1 [+ s/ S1 H oSo, 9/9=0.9....(循環) =1 |