Is the integer n even?
(1) n – 5 is an odd integer.
(2) n/5 is an even integer.
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.
如果0是,那么就是D,如果0不是,就应该选B
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同样的问题也出现在GWD31-9-27中
Q27:
If x and z are integers, is at least one of them even?
(1) x + z is odd.
(2) x - z is odd.
0是偶数...
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