prep里面的一道题：
What is the remainder when the positive integer x is divided by 6?
(1) When x is divided by 2, the remainder is 1; and when x is divided by 3, the remainder is o.
(2) When x is divided by 12, the remainder is 3.
该题是问那个是充分条件。
我的问题是对于第一个条件，如果x＝3，那么3除以6没有商和余数吧，所以该条件不能得出x除以6的余数。可是答案是D，两个条件都可以推出余数。
请教！ | 
