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IMSO 2019 — Math Division — Short Answer Question 22

IMSO Maths · IMSO 2019 — Math Division — Short Answer

Question 22

Ms. Hà has a list of numbers in ascending order such that the difference between any two adjacent numbers is the same. If she removes the 25 greatest numbers and the 11 smallest numbers from the list, the average of the numbers in the list decreases by 2019. What is the difference between any two adjacent numbers of the original list?