If x and y are integers between 10 and 99, inclusive,is $$\frac{x - y}{9}$$ an integer?
1. x and y have the same two digits, but in reverse order.
2.The tens' digit of x is 2 more than the units' digit, and the tens' digit of y is 2 less than the units' digit.
-
AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
-
BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
-
CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
-
DEACH statement ALONE is sufficient.
-
EStatements (1) and (2)TOGETHER are NOT sufficient.
显示答案
正确答案: A