# GMAT 考满分题库

If $x^{a - b} = 1$, what is the value of x ?

(1) $a \neq b$

(2) x > 0
• AStatement 1 ALONE is sufficient to answer the question, but statement 2 alone is NOT sufficient.
• BStatement 2 ALONE is sufficient to answer the question, but statement 1 alone is NOT sufficient.
• CBOTH statements 1 and 2 TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient.
• DEach statement ALONE is sufficient to answer the question.
• EStatement 1 and 2 TOGETHER are NOT sufficient to answer the question. Previous

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