GMAT数学练习题及答案【10】

2022-06-04 00:38:49

  

  Each of the45 boxes on shelf J weighs less than each of the 44 boxes on shelf K. What is the median weight of the 89 boxes onthese shelves?

  (1) The heaviest box on shelf J weighs 15 pounds.

  (2) The lightest box on shelf K weighs 20 pounds.

  A.Statement (1) ALONE is sufficient, but statement (2) alone is notsufficient.

  B.Statement (2) ALONE is sufficient, but statement (1) alone is notsufficient.

  C. BOTH statementsTOGETHER are sufficient, but NEITHER statement ALONE issufficient.

  D. EACHstatement ALONE is sufficient.

  E.Statements (1) and (2) TOGETHER are NOT sufficient.

  参考答案:A

  题目翻译:J上的45个箱子比K上的44个都轻,处于89个箱子中间的箱子的重量是?

  题目全解:一字排开,最中间的J的箱子,所以知道K的没用。A答案suffi。

  On Saturdaymorning, Malachi will begin a camping vacation and he will return home at theend of the first day on which it rains. If on the first three days of the vacation the probability of rain oneach day is 0.2, what is the probability that Malachi will return home at theend of the day on the following Monday?

  A. 0.008

  B. 0.128

  C. 0.488

  D. 0.512

  E. 0.640

  参考答案:B

  题目翻译:周六上午去野营旅行,每天下雨几率0.2,开始下雨的第一天晚上返回。周一晚上回来的几率多大?

  题目全解:0.8*0.8*0.2=0.128。

  If k isnegative, which of the following must also be negative?

  A. (-k)^2

  B. (-1)k

  C. 1- k

  D. k+ 1

  E. k- 1

  参考答案:E

  题目翻译:k是负数,下面哪项一定是负数。

  题目全解:题目读懂难度为零,考试碰到这种题不要一激动看对答案手误选错选项了~

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