Question 13
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 $x$?
$$10,2,5,2,4,2,x$$
are arranged in increasing order, they form a non-constant arithmetic progression. What is the sum of all possible real values of $x$?