请教思路prep２

susenmayorer

54. When positive integer n is divided by 3, the remainder is 2; and when positive integer t is divided by 5, the remainder is 3. what is the remainder when the product nt is divided by 15?

1) n-2 is divisible by 5 2) t is divisible by 5

Answer: C

felicitymq

条件２　和　题干怎么说ｔ不同啊。

susenmayorer

哦 条件2错了应该是 t is divisible by 3

请再帮看看吧 谢谢