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  3. The following data sufficiency problems consist of a question and two stateme

The following data sufficiency problems consist of a question and two stateme

游客2025-02-27  10
问题    The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether
   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. [br] x=0.57y9. If y denotes the thousandth digit in the decimal representation of x above, what digit is y?
   (1) If x were rounded to the nearest tenth, the result would be 0.6.
   (2) If x were rounded to the nearest hundredth, the result would be 0.58.
选项
答案 E
解析 alone is insufficient because it gives us no new information about y. (2) alone is insufficient because it tells us only that y≥5, which is not sufficient to answer the question. Combining the statements yields no new information.
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