I'm either missing something or the instructions are wrong.
I believe columns F4 - to F13 (which is 10 columns) are some sort of summarization columns of the other columns in the dataset.
Therefore Age which is in column F38 belongs to column 28 in the questions dataset. The number before the age range is just the number of the age range bucket. So 8 = do not want to tell, 2 = 18-24, 3 = 25-34 etc.
The 'experience with search feature' is column 38 in questions dataset so belongs to F48 in the dataset.
In order to match the output of the solution I did this: