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Information and IdeasEasy–MediumLargest single-year change

Information and Ideas practice question

Number of bookshops in a city, by year: 2019: 42 2020: 38 2021: 30 2022: 31 2023: 34

Which choice most accurately completes the statement? 'The largest year-to-year change in the number of bookshops occurred between ____.'

  1. A. 2020 and 2021Correct
  2. B. 2019 and 2020
  3. C. 2021 and 2022
  4. D. 2022 and 2023

Answer: A. 2020 and 2021

Changes: −4, −8, +1, +3. The largest in size is the drop of 8 from 2020 to 2021.

Why the other answers are wrong

B. 2019 and 2020
A change of 4.
C. 2021 and 2022
A change of 1.
D. 2022 and 2023
A change of 3.

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