How is Penny so fast?

Penny and Luke were put in detention by their math teacher. They were given a list of 100 numbers each on a piece of paper and asked to check whether they are in ascending order.

  • Penny completed her task quickly, taking only about 5 minutes.
  • Luke took a lot of time, about 15 minutes.

Judging by the time they took, whose list is more likely to be in Ascending order?

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