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题库 / Prep2007E2-DS-6
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.
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The operation @ represents either addition, subtraction, or multiplication of integers. What is the value of 1 @ 0 ?
(1) 0@2 =2, @ = + --> sufficient
(2) 2@0 =2, @ = + or -, HOWEVER, 1+0 or 1-0 都等於 1， --> sufficient
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