是哪25個呢
更新1:
1 唔算啊!
質數 ( 10點 )
回答 (7)
2010-09-07 3:15 am
1-100
刪去1 : 2-100
刪去2的倍數(除了2) : 2,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99
刪去3的倍數(除了3) : 2,3,5,7,11,13,17,19,23,25,29,31,35,37,41,43,47,49,53,55,59,61,65,67,71,73,77,79,83,85,89,91,95,97
刪去5的倍數(除了5) : 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,49,53,59,61,67,71,73,77,79,83,89,91,97
刪去7的倍數(除了7) :
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97
1-100的質數 : 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97
刪去1 : 2-100
刪去2的倍數(除了2) : 2,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99
刪去3的倍數(除了3) : 2,3,5,7,11,13,17,19,23,25,29,31,35,37,41,43,47,49,53,55,59,61,65,67,71,73,77,79,83,85,89,91,95,97
刪去5的倍數(除了5) : 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,49,53,59,61,67,71,73,77,79,83,89,91,97
刪去7的倍數(除了7) :
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97
1-100的質數 : 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97
參考: myself Don't copy it!!!!!!!!!!!!!!!!!!!!!!!!
2010-09-05 11:59 pm
1-10: 2, 3, 5, 7
11-20: 11, 13, 17, 19
20-29: 23, 29
30-39: 31, 37
40-49: 41, 43, 47
50-59: 53, 59
60-69: 61, 67
70-79: 71, 73, 79
80-89: 83, 89
90-99: 97
2010-09-05 16:02:40 補充：
oh. 寫漏了
49 能被 7 除 .
81 能被 9 除 .
91 能被13 除 .
93 能被 3 除 .
11-20: 11, 13, 17, 19
20-29: 23, 29
30-39: 31, 37
40-49: 41, 43, 47
50-59: 53, 59
60-69: 61, 67
70-79: 71, 73, 79
80-89: 83, 89
90-99: 97
2010-09-05 16:02:40 補充：
oh. 寫漏了
49 能被 7 除 .
81 能被 9 除 .
91 能被13 除 .
93 能被 3 除 .
參考: myself, myself
2010-09-04 1:29 am
2，3，5，7，11，13，17，19，23，29，31，37，41，43，47，53，59， 61，67，71，73，79，83，89，97
93不是質數，它能被3除。
93不是質數，它能被3除。
參考: myself
2010-08-28 7:48 pm
2 ,
3 ,
5 ,
7 ,
11 ,
13 ,
17 ,
19 ,
23 ,
29 ,
31 ,
37 ,
41 ,
43 ,
47 ,
53 ,
59
61 ,
67 ,
71 ,
73 ,
83 ,
87 ,
93 ,
97
3 ,
5 ,
7 ,
11 ,
13 ,
17 ,
19 ,
23 ,
29 ,
31 ,
37 ,
41 ,
43 ,
47 ,
53 ,
59
61 ,
67 ,
71 ,
73 ,
83 ,
87 ,
93 ,
97
參考: 自己
2010-08-28 7:46 pm
2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 53 , 59
61 , 67 , 71 , 73 , 83 , 87 , 93 , 97
61 , 67 , 71 , 73 , 83 , 87 , 93 , 97
2010-08-28 7:45 pm
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53, 59
61,67,71,73,83,87,93,97
2010-08-28 11:46:35 補充：
仲有:1
^.^
61,67,71,73,83,87,93,97
2010-08-28 11:46:35 補充：
仲有:1
^.^
2010-08-28 7:42 pm
100的質數
背LA
2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 53 , 59
61 , 67 , 71 , 73 , 83 , 87 , 93 , 97
背LA
2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 53 , 59
61 , 67 , 71 , 73 , 83 , 87 , 93 , 97
收錄日期: 2021-04-20 13:44:21
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100828000051KK00535