math
posted by karen .
For 3 collections, the mode was 126 and the range is 26. What are the 2 possibilities for the number of items in each collection?

I'm not sure what you are asking.
126 what?
If the mode is 126 and the range is from 120 to 146, you have a positively skewed distribution.
If the mode is 126 and the range is from 104 to 130, you have a negatively skewed distribution.
If the range is 133159, then it approximates a normal distribution.
Does this answer your question? 
No it is not the answer