A 650 level GMAT problem solving question in statistics and averages.
Concept: Median, average and range of a set of numbers.
Question
Three positive integers a, b, and c are such that their average is 20 and a (lesser than or equal to) b (lesser than or equal to) c. If the median is (a + 11), what is the least possible value of c?
A. 23
B. 21
C. 25
D. 26
E. 24
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