Data Sufficiency

What is the Median of the set A?

1) Mean of the set A is 10
2) Range of the set A is 0

Source: www.GMATinsight.com

Answer: option C

GMATinsight wrote:What is the Median of the set A?

1) Mean of the set A is 10
2) Range of the set A is 0

Source: www.GMATinsight.com

Answer: option C

1) Set 1: {0,0,30} Median = 0
Set : {10,10} Median = 10
Not sufficient

2) If the range is 0, all the elements are the same
Set 1: {1,1} Median = 1
Set 2: {2,2} Median = 2

Together: If the elements are all the same, and the average is 10, then every element in the set must equal 10, giving us a median of 10. Sufficient. The answer is C