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In Episode 7 of our GMAT Ninja CR series, we are rounding up the oddballs, the misfits, and the format-benders: EXCEPT, Fill-In-The-Blanks, and other unusual Critical Reasoning question types. When you see a question that ends with a literal blank line
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For most test takers, Data Insights is the most challenging section on the GMAT, with test takers scoring several points lower on average on DI than on Quant or Verbal and completing the section with less time to spare. - Jun 10
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Although utilities pay less for low-quality coal per ton delivered than for high-quality coal, more low-quality coal must be burned to generate the same amount of electricity. Therefore, the proper basis for a cost comparison at any given time is the relative cost, at that time, of purchasing the amount of coal a utility needs to buy in order to generate a given amount of electricity.
Which of the following, if true, casts the most serious doubt on the accuracy of the conclusion above?
A. Per ton of coal burned, low-quality coal generates more ash than does high-quality coal, and the disposal of ash is becoming more expensive.
B. Many large industrial centers are located closer to geological deposits of high-quality coal than they are to geological deposits of low-quality coal.
C. Known reserves of low-quality coal are many times larger than known reserves of high-quality coal.
D. The price per ton of high-quality coal has been rising faster than the price per ton for low-quality coal, and this trend will continue.
E. Coal-fired power plants that burn low-quality coal efficiently also burn high-quality coal efficiently.
Which of the following, if true, casts the most serious doubt on the accuracy of the conclusion above?
A. Per ton of coal burned, low-quality coal generates more ash than does high-quality coal, and the disposal of ash is becoming more expensive.
B. Many large industrial centers are located closer to geological deposits of high-quality coal than they are to geological deposits of low-quality coal.
C. Known reserves of low-quality coal are many times larger than known reserves of high-quality coal.
D. The price per ton of high-quality coal has been rising faster than the price per ton for low-quality coal, and this trend will continue.
E. Coal-fired power plants that burn low-quality coal efficiently also burn high-quality coal efficiently.
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