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Month: November 2021

Problem 24

When the mean, median, and mode of the list

10,2,5,2,4,2,x

are arranged in increasing order, they form a non-constant arithmetic progression. What is the sum of all possible real values of x?

(A) 3 (B) 6 (C) 9 (D) 17 (E) 20

ANSWER: E

Author adminPosted on November 4, 2021April 19, 2022Categories math competition

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