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For two computers X and Y, if the performance of computer X is greater than the performance of computer Y, we have

  • A.PerformanceX = 2 × PerformanceY
  • B.PerformanceX = PerformanceY
  • C.PerformanceX < PerformanceY
  • D.PerformanceX > PerformanceY

Answer: B

Correct answer: PerformanceX > PerformanceY

The statement is simply restated in symbols: if X performs better than Y then its performance figure is the larger one. Since performance is 1/execution time, this is the same as saying X's execution time is the shorter of the two.

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