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سؤال 21

Four race times are 9.8, 9.75, 9.805 and 9.79 seconds. Which list orders them from fastest to slowest?

  1. 9.8, 9.75, 9.79, 9.805
  2. 9.75, 9.79, 9.8, 9.805پاسخ درست
  3. 9.805, 9.8, 9.79, 9.75
  4. 9.75, 9.8, 9.79, 9.805

توضیح

A faster time is smaller, and alignment gives 9.750 < 9.790 < 9.800 < 9.805. Putting 9.8 first because it has fewer written digits reverses the numerical comparison rather than ordering the times.

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