What is the remainder when the two digit, positive integer x is divided by 3?
(1) The sum of the digits of x is 5.
(2) The remainder when x is divided by 9 is 5.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
我用例子算了一下 A 确实可以确定余数为2 但是我想知道
道理何在啊 |