Final answer:
The value of k when 'mn' is greater than 'kl' and less than 'pl' cannot be accurately determined without more context, as the question may relate to different mathematical or chemical interpretations.
Step-by-step explanation:
If mn is greater than kl and less than pl, and we are considering the value of k given that I is positive, it depends on the context provided by the question.
Given the various scenarios where K could represent a value in mathematics or chemistry, as indicated by different examples pertaining to reaction quotients, dissociation constants, or statistical probabilities, we must adhere to the particular context within the question. However, without additional information on the variables mn, kl, and pl, or the specific scenario, it's challenging to offer a concrete answer.