[中學] 一題排列組合
設a,b,c,d,e∈{1,2,3,4,5} 則使(a-b)(b-c)(c-d)(d-e)(e-a)=0的方程式有幾種
請問這題該如何去算 好像可以用塗色法去解
可是我不會用
希望大大們可以講仔細點
感謝
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推
04/10 18:00, , 1F
04/10 18:00, 1F
→
04/10 18:01, , 2F
04/10 18:01, 2F
→
04/10 18:01, , 3F
04/10 18:01, 3F
→
04/10 18:03, , 4F
04/10 18:03, 4F
→
04/10 18:28, , 5F
04/10 18:28, 5F
→
04/10 18:29, , 6F
04/10 18:29, 6F
→
04/10 18:43, , 7F
04/10 18:43, 7F
→
04/10 18:44, , 8F
04/10 18:44, 8F
→
04/10 18:46, , 9F
04/10 18:46, 9F
→
04/10 18:46, , 10F
04/10 18:46, 10F
→
04/10 18:47, , 11F
04/10 18:47, 11F
→
04/10 18:48, , 12F
04/10 18:48, 12F
→
04/10 18:54, , 13F
04/10 18:54, 13F
→
04/10 18:55, , 14F
04/10 18:55, 14F
推
04/11 11:58, , 15F
04/11 11:58, 15F
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