Why 'n is divisible by 2' implies 'n is divisible by 2 or 3'
回答 (3)
2008-06-11 8:31 am
✔ 最佳答案
becos is only 2 "OR" 3instead of "and"
thus it only need to satisfy one of the condition
參考: me
2008-06-05 8:13 pm
其實好簡單
你想一想當一個數可以被 2 整除 (n is divisible by 2)
即係一個 雙數 (n = 2k, k is integer)
而 n is divisible by 2 or 3
意思是 n 可以被 2 或 3 整除
那若 n = 2k，當然可以令 n is divisible by 2 or 3 成立
因為已知 n 可以被 2 整除嗎
2008-06-05 12:14:57 補充：
若寫 n is divisible by 2 and 3
那即是說 n 要同時被 2 和 3 整除
即是等於 n is divisible by 6
你想一想當一個數可以被 2 整除 (n is divisible by 2)
即係一個 雙數 (n = 2k, k is integer)
而 n is divisible by 2 or 3
意思是 n 可以被 2 或 3 整除
那若 n = 2k，當然可以令 n is divisible by 2 or 3 成立
因為已知 n 可以被 2 整除嗎
2008-06-05 12:14:57 補充：
若寫 n is divisible by 2 and 3
那即是說 n 要同時被 2 和 3 整除
即是等於 n is divisible by 6
2008-06-05 8:09 pm
impossible.
I realize 'n is divisible by 6' implies 'n is divisible by 2 or 3'
I realize 'n is divisible by 6' implies 'n is divisible by 2 or 3'
收錄日期: 2021-04-27 15:02:16
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