How do arrange 5.15 5.01 5.09 5.91 from largest to smallest?

Answer 1

It is not possible to answer the question because the number have all been run into one another. As a result is is not possible to tell whether the first two numbers are 5.1 and 55.015 or 55.01 or 55.0or 5.15 and 5.015 or 5.01 or 55.0, and so on down the line.