有一16位數,當它分別乘以2,3,4,5.....15,16時,仍是一個16位數,但他們的全部數字卻一樣,只不過是組成順序不同而已.求此16位數(要過程)
國中

回應

Lagrange

2006-02-07 21:21
一个16位数乘以10怎么会是一个16位数

linian

2006-02-07 21:48
那如果只乘到9會有解嗎

訪客 (未驗證)

2006-02-07 22:52
設a=0,588,235,294,117,647

2a=1,176,470,588,235,294
3a=1,764,705,882,352,941
4a=2,352,941,176,470,588
5a=2,941,176,470,588,235
6a=3,529,411,764,705,882
7a=4,117,647,058,823,529
8a=4,705,882,352,941,176
9a=5,294,117,647,058,823
10a=5,882,352,941,176,470
11a=6,470,588,235,294,117
12a=7,058,823,529,411,764
13a=7,647,058,823,529,411
14a=8,235,294,117,647,058
15a=8,823,529,411,764,705
16a=9,411,764,705,882,352
17a=9,999,999,999,999,999
:-D ;-) :-o :-P 8-) :-) :lol: :-P :pint:

訪客 (未驗證)

2006-02-07 22:56
1/17=0.0588235294117647循環!!!
:-) :-D ;-) :-o 8-) :-P

kc81731

2006-02-08 07:13
對不起,此題有一些瑕疵,因為0不能為一個數的首位

但此題的意思的確是為"1/17=0.0588235294117647循環"而出

mathematical2005

2006-02-08 13:45
那這一題到底是怎麼一回事
小數算16位嗎

linian

2006-02-08 18:17
其實就是也把0當一位數
實際上就是問1/17循環

j7631103

2006-03-14 23:19
厲害