1至100个数写出质数。合数。偶数。奇数。倍数。

Question

如12的质数有......合数有......偶数有........,......

Answer 1

质数表2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 91 97
合数表4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30,32,33,34,35,36,38,39,40,42,44,45,46,48,49,50,51,52,54,55,56,57,58,60,62,63,64,65,66,68,70,72,74,75,76,77,78,80,81,82,84,85,86,87,88,90,92,93,94,95,96,98,99,100
奇数表1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,6769,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99
偶数表
2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100

Answer 2

奇数：
1,3,5,7,9,
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.

偶数：
2,4,6,8,10,
12,14,16,18,20,
22,24,26,28,30,
32,34,36,38,40,
42,44,46,48,50,
52,54,56,58,60,
62,64,66,68,70,
72,74,76,78,80,
82,84,86,88,90
92,94,96,98,100

质数：
在奇数中，剔除1,9,15,21,27,33,35,39,45,49,51,55,57,63,65,69,75,77,81,85,87,93,95,99
剩下：2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 91 97

合数：除了1之外，偶数与在质数中被剔除部分，即偶数+剔除部分=合数

Answer 3

如果有正整数n，那么可以用2*n表示的都是偶数，可以用2*n+1表示的都是奇数。自己应该列得出
质数有2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 91 97
除了上面的质数和1以外，其他都是合数，也不列举了
倍数也就是合数

如果你要找某个数的质因数，可以找到合数去分解质因数，质数只有1和本身。