SAT的一道数学的题When15isdividedbythepositiveintegerK,theremainderis3.ForhowmanydifferentvaluesofKisthistrue?[A]one[B]two[C]three[D]four[E]five另一道Thenumberthatresultswhenanintegerismutipliedbyitselfcannot

Question

SAT 的一道数学的题
When 15 is divided by the positive integer K,the remainder is 3.For how many different values of K is this true?
[A]one
[B]two
[C]three
[D]four
[E]five
另一道The number that results when an integer is mutiplied by itself cannot end in which of the following digits?[A]1 [B]4 [C]5 [D]6 [E]8
请翻译并给出答案

Answer 1

4、6、12,so the answer should be c