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SMO 2018 Junior Round 1 Question 7

SMO · SMO 2018 Junior Round 1

Question 7

A quadruple $(a,b,c,d)$ of positive integers is balanced if the mean, median and mode of a,b,c,d are equal. How many balanced quadruples $(a,b,c,d)$ of positive integers are there that satisfy $a\le b\le c\le d$ and $a+b+c+d=44$?