What is the median, mode, range of 17, 47, 12, 13, 12?

First, we need to arrange them in order from least to greatest.

12, 12, 13, 17, 47

The middle number -- 13 -- is the median
The number that appears the most -- 12 -- is the mode.

The difference between the largest and smallest is the range. 47 - 12 = 35