Why 'n is divisible by 2' implies 'n is divisible by 2 or 3'

becos is only 2 "OR" 3
instead of "and"
thus it only need to satisfy one of the condition

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

impossible.
I realize 'n is divisible by 6' implies 'n is divisible by 2 or 3'