The operation @ represents either addition, subtraction, or multiplication of integers. What is the value of 1 @ 0 ?
(1) 0 @ 2 = 2
(2) 2 @ 0 = 2
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
条件2 是 不管@代表+或者- 1@0都是1,都有唯一的解
没有考虑1 @ 0 ,只要不为零,12都可以
2-@可以是加也可以是减 但是不管是加是减都等于1 sufficient
好阴啊这个题= =
条件2 是 不管@代表+或者- 1@0都是1
好气啊错在这里
陷阱