Vavish,
I believe that the text is not correctly transcript.
Although, according to was is written the answer is C.
Lets see how.....
From 1,2,3,.....,10 you have to chose a serie of five that gives the greater possible mean but the least median and that can only be...
{1,2,3,9,10}, why? because it minimize the median (=3) and chosing the numbers 9 and 10 we can only maximize the mean (=5).
So 5-3=2
Hope it helps
numbers
This topic has expert replies
Source: Beat The GMAT — Problem Solving |
We know to find the median you have to reorder the numbers from least to greatest and pick the middle number - {1,2,3,9,10}
What about 9 and 10? because you're asked to find the mean (average) bigger than the median (in this case, bigger than 3).
Mean = 1+2+3+9+10/5 = 5.
If you find the difference between both average and median
5-3=2.
What about 9 and 10? because you're asked to find the mean (average) bigger than the median (in this case, bigger than 3).
Mean = 1+2+3+9+10/5 = 5.
If you find the difference between both average and median
5-3=2.
